Pylodictis olivaris - (Rafinesque, 1818)
Flathead Catfish
Taxonomic Status: Accepted
Related ITIS Name(s): Pylodictis olivaris (Rafinesque, 1818) (TSN 164029)
French Common Names: barbu à tête plate
Unique Identifier: ELEMENT_GLOBAL.2.105295
Element Code: AFCKA03010
Informal Taxonomy: Animals, Vertebrates - Fishes - Bony Fishes - North American Freshwater Catfishes
 
Kingdom Phylum Class Order Family Genus
Animalia Craniata Actinopterygii Siluriformes Ictaluridae Pylodictis
Genus Size: A - Monotypic genus
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Concept Reference
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Concept Reference: Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea, and W.B. Scott. 1991. Common and scientific names of fishes from the United States and Canada. American Fisheries Society, Special Publication 20. 183 pp.
Concept Reference Code: B91ROB01NAUS
Name Used in Concept Reference: Pylodictis olivaris
Taxonomic Comments: Monotypic genus. Pylodictis and Satan are sister groups (Lundberg 1992, which see for a synthesis of recent work on the systematic relationships of ictalurid catfishes.
Conservation Status
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NatureServe Status

Global Status: G5
Global Status Last Reviewed: 09Feb2016
Global Status Last Changed: 19Sep1996
Ranking Methodology Used: Ranked by inspection
Rounded Global Status: G5 - Secure
Nation: United States
National Status: N5 (05Sep1996)
Nation: Canada
National Status: NNA (27Dec2017)

U.S. & Canada State/Province Status
Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
United States Alabama (S5), Arizona (SNA), Arkansas (S4), California (SNA), Colorado (S4), Florida (SNR), Georgia (S4), Idaho (SNA), Illinois (S3), Indiana (S5), Iowa (S4), Kansas (S5), Kentucky (S4S5), Louisiana (S5), Maryland (SNA), Michigan (S3), Minnesota (SNR), Mississippi (S5), Missouri (SNR), Nebraska (S4), New Mexico (S2), New York (SNR), North Carolina (S2), North Dakota (S4), Ohio (S5), Oklahoma (S4), Oregon (SNA), Pennsylvania (S5), South Carolina (SNR), South Dakota (S5), Tennessee (S5), Texas (S5), Virginia (S4), Washington (SNA), West Virginia (S5), Wisconsin (S4)
Canada Ontario (SNA)

Other Statuses

Committee on the Status of Endangered Wildlife in Canada (COSEWIC): Data Deficient (25Apr2008)
Comments on COSEWIC: Reason for designation: Since only six adult specimens have been caught in Canadian waters, it is not possible at this time to determine eligibility.

Status history: Species considered in April 1993 and placed in the Data Deficient category. Category re-examined and confirmed in April 2008.

NatureServe Global Conservation Status Factors

Range Extent Comments: Native to lower Great Lakes basin and Mississippi, Missouri, and Ohio river basins, from western Pennsylvania and southern Ontario (introduced? breeding?; Goodchild 1993) to the White-Little Missouri river system, North Dakota, and south to Louisiana; Gulf Slope from Mobile Bay drainage, Georgia and Alabama, to Mexico; introduced in Florida, South Carolina, Idaho, Oregon, Washington, Arizona, California (Lee and Terrell 1987), and elsewhere.

Number of Occurrences:  
Number of Occurrences Comments: This species is represented by a large number of subpopulations and locations.

Population Size Comments: Total adult population size is unknown but relatively large.

Overall Threat Impact Comments: Localized threats may exist, but on a range-wide scale no major threats are known.

Short-term Trend Comments: Trend over the past 10 years or three generations is uncertain but likely relatively stable or slowly declining.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Native to lower Great Lakes basin and Mississippi, Missouri, and Ohio river basins, from western Pennsylvania and southern Ontario (introduced? breeding?; Goodchild 1993) to the White-Little Missouri river system, North Dakota, and south to Louisiana; Gulf Slope from Mobile Bay drainage, Georgia and Alabama, to Mexico; introduced in Florida, South Carolina, Idaho, Oregon, Washington, Arizona, California (Lee and Terrell 1987), and elsewhere.

U.S. States and Canadian Provinces

Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
Color legend for Distribution Map
Endemism: occurs (regularly, as a native taxon) in multiple nations

U.S. & Canada State/Province Distribution
United States AL, AR, AZexotic, CAexotic, CO, FL, GA, IA, IDexotic, IL, IN, KS, KY, LA, MD, MI, MN, MO, MS, NC, ND, NE, NM, NY, OH, OK, ORexotic, PAnative and exotic, SC, SD, TN, TX, VA, WAexotic, WI, WV
Canada ONexotic

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
ND Emmons (38029)*, Sioux (38085)*
NM Catron (35003), Chaves (35005), Dona Ana (35013)*, Eddy (35015)*, Grant (35017), Hidalgo (35023), Sierra (35051)*
OK Carter (40019), Johnston (40069), Murray (40099)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
03 Sepulga (03140303), Lower Conecuh (03140304), Conasauga (03150101), Coosawattee (03150102), Etowah (03150104), Upper Coosa (03150105), Middle Coosa (03150106), Lower Coosa (03150107), Upper Tallapoosa (03150108), Middle Tallapoosa (03150109), Lower Tallapoosa (03150110), Upper Alabama (03150201), Cahaba (03150202), Middle Alabama (03150203), Lower Alabama (03150204), Upper Tombigbee (03160101), Buttahatchee (03160103), Luxapallila (03160105), Middle Tombigbee-Lubbub (03160106), Sipsey (03160107), Noxubee (03160108), Mulberry (03160109), Sipsey Fork (03160110), Locust (03160111), Upper Black Warrior (03160112), Lower Black Warrior (03160113), Middle Tombigbee-Chickasaw (03160201), Sucarnoochee (03160202), Lower Tambigbee (03160203), Mobile - Tensaw (03160204), Lower Chickasawhay (03170003), Lower Leaf (03170005), Pascagoula (03170006), Escatawpa (03170008), Mississippi Coastal (03170009), Upper Pearl (03180001), Middle Pearl-Strong (03180002), Middle Pearl-Silver (03180003), Lower Pearl. Mississippi (03180004), Bogue Chitto (03180005)
04 Lake Winnebago (04030203)*, Little Calumet-Galien (04040001), St. Joseph (04050001), Ottawa-Stony (04100001), Raisin (04100002), St. Joseph (04100003), St. Marys (04100004), Upper Maumee (04100005), Auglaize (04100007), Huron-Vermilion (04100012), Chautauqua-Conneaut (04120101), Lake Erie (04120200)*
05 Middle Allegheny-Redbank (05010006), Lower Allegheny (05010009), West Fork (05020002), Lower Monongahela (05020005), Upper Ohio (05030101)*, Shenango (05030102), Upper Ohio-Wheeling (05030106), Little Muskingum-Middle Island (05030201), Upper Ohio-Shade (05030202), Little Kanawha (05030203), Hocking (05030204)*, Walhonding (05040003)*, Muskingum (05040004), Wills (05040005)*, Licking (05040006), Upper New (05050001), Middle New (05050002), Greenbrier (05050003), Lower New (05050004), Gauley (05050005), Upper Kanawha (05050006), Elk (05050007), Lower Kanawha (05050008), Coal (05050009), Upper Scioto (05060001), Lower Scioto (05060002), Paint (05060003)*, Upper Guyandotte (05070101), Lower Guyandotte (05070102), Tug (05070201), Upper Levisa (05070202), Lower Levisa (05070203), Big Sandy (05070204), Whitewater (05080003), Raccoon-Symmes (05090101), Little Scioto-Tygarts (05090103), Little Sandy (05090104), Ohio Brush-Whiteoak (05090201), Little Miami (05090202)*, Middle Ohio-Laughery (05090203), Licking (05100101), South Fork Licking (05100102), North Fork Kentucky (05100201), Middle Fork Kentucky (05100202), South Fork Kentucky (05100203), Upper Kentucky (05100204), Lower Kentucky (05100205), Upper Green (05110001), Barren (05110002), Middle Green (05110003), Rough (05110004), Lower Green (05110005), Pond (05110006), Upper Wabash (05120101), Salamonie (05120102), Mississinewa (05120103), Eel (05120104), Middle Wabash-Deer (05120105), Tippecanoe (05120106), Wildcat (05120107), Middle Wabash-Little Vermilion (05120108), Vermilion (05120109), Sugar (05120110), Middle Wabash-Busseron (05120111), Embarras (05120112), Lower Wabash (05120113), Little Wabash (05120114), Skillet (05120115)*, Upper White (05120201), Lower White (05120202), Eel (05120203), Driftwood (05120204), Flatrock-Haw (05120205), Upper East Fork White (05120206), Muscatatuck (05120207), Lower East Fork White (05120208), Patoka (05120209), Upper Cumberland (05130101), Rockcastle (05130102), Upper Cumberland-Lake Cumberland (05130103), South Fork Cumberland (05130104), Obey (05130105), Upper Cumberland-Cordell Hull (05130106), Caney (05130108), Lower Cumberland-Old Hickory Lake (05130201), Stones (05130203), Lower Cumberland (05130205), Silver-Little Kentucky (05140101), Salt (05140102), Rolling Fork (05140103), Blue-Sinking (05140104), Lower Ohio-Little Pigeon (05140201), Highland-Pigeon (05140202), Lower Ohio-Bay (05140203), Tradewater (05140205), Lower Ohio (05140206)
06 North Fork Holston (06010101), South Fork Holston (06010102), Watauga (06010103), Holston (06010104), Upper French Broad (06010105), Pigeon (06010106), Lower French Broad (06010107), Nolichucky (06010108), Watts Bar Lake (06010201), Upper Little Tennessee (06010202), Tuckasegee (06010203), Lower Little Tennessee (06010204), Upper Clinch (06010205), Powell (06010206), Lower Clinch (06010207), Emory (06010208), Middle Tennessee-Chickamauga (06020001), Hiwassee (06020002), Sequatchie (06020004), Guntersville Lake (06030001), Wheeler Lake (06030002), Upper Elk (06030003), Lower Elk (06030004), Pickwick Lake (06030005), Bear (06030006), Lower Tennessee-Beech (06040001), Upper Duck (06040002), Lower Duck (06040003), Buffalo (06040004), Kentucky Lake (06040005), Lower Tennessee (06040006)
07 Elk-Nokasippi (07010104), Long Prairie (07010108), Platte-Spunk (07010201), Sauk (07010202), Clearwater-Elk (07010203), Crow (07010204), South Fork Crow (07010205), Twin Cities (07010206), Upper Minnesota (07020001), Pomme De Terre (07020002), Lac Qui Parle (07020003), Hawk-Yellow Medicine (07020004), Chippewa (07020005), Redwood (07020006), Middle Minnesota (07020007), Cottonwood (07020008), Blue Earth (07020009), Watonwan (07020010), Le Sueur (07020011), Lower Minnesota (07020012), Upper St. Croix (07030001), Lower St. Croix (07030005), Rush-Vermillion (07040001), Cannon (07040002), Buffalo-Whitewater (07040003), Zumbro (07040004), Trempealeau (07040005), La Crosse-Pine (07040006), Black (07040007), Root (07040008), Lower Chippewa (07050005), Eau Claire (07050006), Red Cedar (07050007)*, Coon-Yellow (07060001), Grant-Little Maquoketa (07060003), Apple-Plum (07060005), Lower Wisconsin (07070005), Copperas-Duck (07080101), Flint-Henderson (07080104), Upper Cedar (07080201), Shell Rock (07080202), Winnebago (07080203), Middle Cedar (07080205)*, Lower Cedar (07080206), Upper Iowa (07080207), Middle Iowa (07080208), Lower Iowa (07080209), Upper Rock (07090001)*, Pecatonica (07090003), Sugar (07090004), Lower Rock (07090005), Des Moines Headwaters (07100001), Upper Des Moines (07100002), East Fork Des Moines (07100003), Middle Des Moines (07100004), Boone (07100005)*, North Raccoon (07100006)*, South Raccoon (07100007)*, Lake Red Rock (07100008)*, Bear-Wyaconda (07110001), North Fabius (07110002), South Fabius (07110003), The Sny (07110004), North Fork Salt (07110005), South Fork Salt (07110006), Salt (07110007), Cuivre (07110008), Peruque-Piasa (07110009), Kankakee (07120001), Iroquois (07120002), Upper Illinois (07120005), Lower Fox (07120007), Lower Illinois-Lake Chautauqua (07130003), Mackinaw (07130004), Spoon (07130005), Upper Sangamon (07130006), South Fork Sangamon (07130007)*, Lower Sangamon (07130008)*, Salt (07130009), La Moine (07130010)*, Lower Illinois (07130011), Macoupin (07130012)*, Cahokia-Joachim (07140101), Meramec (07140102), Bourbeuse (07140103), Big (07140104)*, Upper Mississippi-Cape Girardeau (07140105), Big Muddy (07140106), Whitewater (07140107), Upper Kaskaskia (07140201)*, Middle Kaskaskia (07140202)*, Shoal (07140203), Lower Kaskaskia (07140204)*
08 Lower Mississippi-Memphis (08010100), Bayou De Chien-Mayfield (08010201), Obion (08010202), South Fork Obion (08010203), Lower Hatchie (08010208), Lower Mississippi-Helena (08020100), Upper St. Francis (08020202), Lower St. Francis (08020203), Little River Ditches (08020204), L'anguille (08020205), Cache (08020302), Lower White (08020303), Big (08020304), Lower Arkansas (08020401), Bayou Meto (08020402), Lower Mississippi-Greenville (08030100), Little Tallahatchie (08030201), Yocona (08030203)*, Coldwater (08030204), Yalobusha (08030205), Deer-Steele (08030209), Ouachita Headwaters (08040101), Upper Ouachita (08040102), Little Missouri (08040103), Lower Ouachita-Smackover (08040201), Lower Ouachita-Bayou De Loutre (08040202), Upper Saline (08040203), Lower Saline (08040204), Bayou Bartholomew (08040205), Bayou D'arbonne (08040206), Lower Ouachita (08040207), Lower Red (08040301), Castor (08040302), Dugdemona (08040303), Little (08040304), Black (08040305), Bayou Cocodrie (08040306), Boeuf (08050001), Bayou Macon (08050002), Tensas (08050003), Lower Mississippi-Natchez (08060100), Upper Big Black (08060201), Lower Big Black (08060202), Bayou Pierre (08060203), Homochitto (08060205), Buffalo (08060206), Lower Mississippi-Baton Rouge (08070100), Bayou Sara-Thompson (08070201), Amite (08070202), Tickfaw (08070203), Lake Maurepas (08070204), Tangipahoa (08070205), Lower Grand (08070300), Atchafalaya (08080101), Bayou Teche (08080102), Vermilion (08080103), Mermentau Headwaters (08080201), Mermentau (08080202), Upper Calcasieu (08080203), Whisky Chitto (08080204), West Fork Calcasieu (08080205), Lower Calcasieu (08080206), Lower Mississippi-New Orleans (08090100), Liberty Bayou-Tchefuncta (08090201), Eastern Louisiana Coastal (08090203), East Central Louisiana Coastal (08090301), West Central Louisiana Coastal (08090302)
09 Bois De Sioux (09020101), Mustinka (09020102), Western Wild Rice (09020105)
10 Lower Cheyenne (10120112), Cherry (10120113), Upper Lake Oahe (10130102)+, Beaver (10130104)+, Lower Lake Oahe (10130105), West Missouri Coteau (10130106), Cedar (10130205), Lower Cannonball (10130206), North Fork Grand (10130301), Grand (10130303), Lower Moreau (10130306), Fort Randall Reservoir (10140101), Bad (10140102), Medicine Knoll (10140103), Medicine (10140104), Crow (10140105), Middle White (10140202), Little White (10140203), Lower White (10140204), Ponca (10150001), Middle Niobrara (10150004), Snake (10150005), Keya Paha (10150006), Lower Niobrara (10150007), Upper James (10160003), Elm (10160004), Mud (10160005), Middle James (10160006), East Missouri Coteau (10160007), Snake (10160008), Turtle (10160009), North Big Sioux Coteau (10160010), Lower James (10160011), Lewis and Clark Lake (10170101), Vermillion (10170102), South Big Sioux Coteau (10170103), Middle Big Sioux Coteau (10170201), Upper Big Sioux (10170202), Lower Big Sioux (10170203), Rock (10170204), Lower North Platte (10180014), Lower South Platte (10190018), Middle Platte-Buffalo (10200101), Wood (10200102), Middle Platte-Prairie (10200103), Lower Platte-Shell (10200201), Lower Platte (10200202), Salt (10200203), Upper Middle Loup (10210001), Dismal (10210002), Lower Middle Loup (10210003), South Loup (10210004), Mud (10210005), Upper North Loup (10210006), Lower North Loup (10210007), Calamus (10210008), Loup (10210009), Cedar (10210010), Upper Elkhorn (10220001), North Fork Elkhorn (10220002), Lower Elkhorn (10220003), Logan (10220004), Blackbird-Soldier (10230001), Little Sioux (10230003), Big Papillion-Mosquito (10230006), Keg-Weeping Water (10240001), Tarkio-Wolf (10240005), Little Nemaha (10240006), South Fork Big Nemaha (10240007), Big Nemaha (10240008), Nodaway (10240010), Independence-Sugar (10240011), Platte (10240012), One Hundred and Two (10240013), North Fork Republican (10250002), Upper Republican (10250004), Frenchman (10250005), Stinking Water (10250006), Red Willow (10250007), Medicine (10250008), Harlan County Reservoir (10250009), Lower Sappa (10250011), Beaver (10250014), Prairie Dog (10250015), Middle Republican (10250016), Lower Republican (10250017), Upper Smoky Hill (10260003), Middle Smoky Hill (10260006), Big (10260007), Lower Smoky Hill (10260008), Upper Saline (10260009), Upper North Fork Solomon (10260011), Lower North Fork Solomon (10260012), Upper South Fork Solomon (10260013), Lower South Fork Solomon (10260014), Solomon (10260015), Upper Kansas (10270101), Middle Kansas (10270102), Delaware (10270103), Lower Kansas (10270104), Upper Big Blue (10270201), Middle Big Blue (10270202), West Fork Big Blue (10270203), Turkey (10270204), Lower Big Blue (10270205), Upper Little Blue (10270206), Lower Little Blue (10270207), Upper Grand (10280101), Thompson (10280102), Lower Grand (10280103), Upper Chariton (10280201), Lower Chariton (10280202), Upper Marais Des Cygnes (10290101), Lower Marais Des Cygnes (10290102), Little Osage (10290103), Marmaton (10290104), Sac (10290106)*, South Grand (10290108), Lake of the Ozarks (10290109), Niangua (10290110), Lower Osage (10290111), Upper Gasconade (10290201), Big Piney (10290202), Lower Gasconade (10290203), Lower Missouri-Crooked (10300101), Lower Missouri-Moreau (10300102), Lamine (10300103), Lower Missouri (10300200)
11 Beaver Reservoir (11010001), James (11010002), Bull Shoals Lake (11010003), Buffalo (11010005), North Fork White (11010006), Upper Black (11010007), Current (11010008), Lower Black (11010009), Spring (11010010), Strawberry (11010012), Upper White-Village (11010013), Little Red (11010014), Middle Arkansas-Lake Mckinney (11030001), Coon-Pickerel (11030004), Gar-Peace (11030010), Cow (11030011), Little Arkansas (11030012), Middle Arkansas-Slate (11030013), North Fork Ninnescah (11030014), South Fork Ninnescah (11030015), Ninnescah (11030016), Upper Walnut River (11030017), Lower Walnut River (11030018), Upper Cimarron (11040002), Upper Cimarron-Liberal (11040006), Crooked (11040007), Upper Cimarron-Bluff (11040008), Lower Cimarron-Eagle Chief (11050001), Lower Cimarron-Skeleton (11050002), Lower Cimarron (11050003), Kaw Lake (11060001), Upper Salt Fork Arkansas (11060002), Medicine Lodge (11060003), Lower Salt Fork Arkansas (11060004), Chikaskia (11060005), Black Bear-Red Rock (11060006), Upper Verdigris (11070101), Fall (11070102), Middle Verdigris (11070103), Elk (11070104), Lower Verdigris (11070105), Caney (11070106), Bird (11070107), Neosho headwaters (11070201), Lower Cottonwood (11070203), Upper Neosho (11070204), Middle Neosho (11070205), Lake O' the Cherokees (11070206), Spring (11070207), Lower Neosho (11070209), Middle Canadian-Trujillo (11090101), Punta De Agua (11090102), Rita Blanca (11090103), Carrizo (11090104), Lake Meredith (11090105), Middle Canadian-Spring (11090106), Lower Canadian-Deer (11090201), Lower Canadian-Walnut (11090202), Little (11090203), Lower Canadian (11090204), Upper Beaver (11100101), Middle Beaver (11100102), Coldwater (11100103), Palo Duro (11100104), Lower Beaver (11100201), Upper Wolf (11100202), Lower Wolf (11100203), Middle North Canadian (11100301), Lower North Canadian (11100302), Deep Fork (11100303), Polecat-Snake (11110101), Dirty-Greenleaf (11110102), Illinois (11110103), Robert S. Kerr Reservoir (11110104), Poteau (11110105), Frog-Mulberry (11110201), Dardanelle Reservoir (11110202), Lake Conway-Point Remove (11110203), Petit Jean (11110204), Cadron (11110205), Fourche La Fave (11110206), Lower Arkansas-Maumelle (11110207), Tierra Blanca (11120101), Palo Duro (11120102), Upper Prairie Dog Town Fork Red (11120103), Tule (11120104), Lower Prairie Dog Town Fork Red (11120105), Upper Salt Fork Red (11120201), Lower Salt Fork Red (11120202), Upper North Fork Red (11120301), Middle North Fork Red (11120302), Lower North Fork Red (11120303), Elm Fork Red (11120304), Groesbeck-Sandy (11130101), Blue-China (11130102), North Pease (11130103), Middle Pease (11130104), Pease (11130105), Farmers-Mud (11130201), Cache (11130202), West Cache (11130203), North Wichita (11130204), South Wichita (11130205), Wichita (11130206), Southern Beaver (11130207), Northern Beaver (11130208), Little Wichita (11130209), Lake Texoma (11130210), Washita headwaters (11130301), Upper Washita (11130302), Middle Washita (11130303)+, Lower Washita (11130304), Bois D'arc-Island (11140101), Blue (11140102)+, Muddy Boggy (11140103), Clear Boggy (11140104), Kiamichi (11140105), Pecan-Waterhole (11140106), Upper Little (11140107), Mountain Fork (11140108), Lower Little (11140109), Mckinney-Posten Bayous (11140201), Middle Red-Coushatta (11140202), Loggy Bayou (11140203), Red Chute (11140204), Bodcau Bayou (11140205), Bayou Pierre (11140206), Lower Red-Lake Iatt (11140207), Saline Bayou (11140208), Black Lake Bayou (11140209), Sulphur headwaters (11140301), Lower Sulphur (11140302), White Oak Bayou (11140303), Cross Bayou (11140304), Lake O'the Pines (11140305), Caddo Lake (11140306), Little Cypress (11140307)
12 Upper Sabine (12010001), Middle Sabine (12010002), Lake Fork (12010003), Toledo Bend Reservoir (12010004), Lower Sabine (12010005), Upper Neches (12020001), Middle Neches (12020002), Lower Neches (12020003), Upper Angelina (12020004), Lower Angelina (12020005), Village (12020006), Pine Island Bayou (12020007), Upper West Fork Trinity (12030101), Lower West Fork Trinity (12030102), Elm Fork Trinity (12030103), Denton (12030104), Upper Trinity (12030105), East Fork Trinity (12030106), Cedar (12030107), Richland (12030108), Chambers (12030109), Lower Trinity-Tehuacana (12030201), Lower Trinity-Kickapoo (12030202), Lower Trinity (12030203), West Fork San Jacinto (12040101), Spring (12040102), East Fork San Jacinto (12040103), Buffalo-San Jacinto (12040104), Sabine Lake (12040201), East Galveston Bay (12040202), North Galveston Bay (12040203), West Galveston Bay (12040204), Austin-Oyster (12040205), Yellow House Draw (12050001), Blackwater Draw (12050002), North Fork Double Mountain Fork (12050003), Double Moutain Fork Brazos (12050004), Running Water Draw (12050005), White (12050006), Salt Fork Brazos (12050007), Middle Brazos-Millers (12060101), Upper Clear Fork Brazos (12060102), Paint (12060103), Lower Clear Fork Brazos (12060104), Hubbard (12060105), Middle Brazos-Palo Pinto (12060201), Middle Brazos-Lake Whitney (12060202), Bosque (12060203), North Bosque (12060204), Lower Brazos-Little Brazos (12070101), Yegua (12070102), Navasota (12070103), Lower Brazos (12070104), Leon (12070201), Cowhouse (12070202), Lampasas (12070203), Little (12070204), San Gabriel (12070205), Lost Draw (12080001), Colorado headwaters (12080002), Monument-Seminole Draws (12080003), Mustang Draw (12080004), Johnson Draw (12080005), Sulphur Springs Draw (12080006), Beals (12080007), Upper Colorado (12080008), Middle Colorado-Elm (12090101), South Concho (12090102), Middle Concho (12090103), North Concho (12090104), Concho (12090105), Middle Colorado (12090106), Pecan Bayou (12090107), Jim Ned (12090108), San Saba (12090109), Brady (12090110), Buchanan-Lyndon B (12090201), North Llano (12090202), South Llano (12090203), Llano (12090204), Austin-Travis Lakes (12090205), Pedernales (12090206), Lower Colorado-Cummins (12090301), Lower Colorado (12090302), San Bernard (12090401), East Matagorda Bay (12090402), Lavaca (12100101), Navidad (12100102), Upper Guadalupe (12100201), Middle Guadalupe (12100202), San Marcos (12100203), Lower Guadalupe (12100204), Upper San Antonio (12100301), Medina (12100302), Lower San Antonio (12100303), Cibolo (12100304), Central Matagorda Bay (12100401), West Matagorda Bay (12100402), Aransas Bay (12100405), Mission (12100406), Aransas (12100407), Nueces headwaters (12110101), West Nueces (12110102), Upper Nueces (12110103), Turkey (12110104), Middle Nueces (12110105), Upper Frio (12110106), Hondo (12110107), Lower Frio (12110108), San Miguel (12110109), Atascosa (12110110), Lower Nueces (12110111), San Fernando (12110204), Baffin Bay (12110205), Palo Blanco (12110206), Central Laguna Madre (12110207), South Laguna Madre (12110208)
13 Elephant Butte Reservoir (13020211)+, El Paso-Las Cruces (13030102)+*, Rio Grande-Fort Quitman (13040100)+, Cibolo-Red Light (13040201), Alamito (13040202), Black Hills-Fresno (13040203), Terlingua (13040204), Big Bend (13040205), Maravillas (13040206), Santiago Draw (13040207), Reagan-Sanderson (13040208), San Francisco (13040209), Lozier Canyon (13040210), Big Canyon (13040211), Amistad Reservoir (13040212), Upper Devils (13040301), Lower Devils (13040302), Dry Devils (13040303), Salt Basin (13050004), Upper Pecos (13060003)+, Upper Pecos-Long Arroyo (13060007)+, Upper Pecos-Black (13060011)+, Lower Pecos-Red Bluff Reservoir (13070001), Delaware (13070002), Toyah (13070003), Salt Draw (13070004), Barrilla Draw (13070005), Coyanosa-Hackberry Draws (13070006), Landreth-Monument Draws (13070007), Lower Pecos (13070008), Tunas (13070009), Independence (13070010), Howard Draw (13070011), Elm-Sycamore (13080001), San Ambrosia-Santa Isabel (13080002), International Falcon Reservoir (13080003), Los Olmos (13090001)
15 Upper Gila (15040001)+, Upper Gila-Mangas (15040002)+, San Francisco (15040004)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
U.S. Distribution by Watershed (based on multiple information sources) Help
Ecology & Life History
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Diagnostic Characteristics: Differs from other catfishes by the following combination of characteristics: notable flattening of the head between the eyes; long, projecting lower jaw; large, flaplike adipose fin, separate from the caudal fin; relatively short anal fins with 14-17 rays; squarish caudal fin; elongate backward extensions on the premaxillary teeth; saw-edged pelvic spine; and 9 pelvic fin rays (Goodchild 1993).
Reproduction Comments: Spawns in late spring and summer at water temperatures of 22-29 C. Eggs hatch in 6-8 days at 24-28 C. Sexually mature in 3-7 years, depending on conditions. Males attend eggs and fry for up to several days after hatching (Becker 1983, Smith 1979). Oldest reported specimens were 16 and 20 years old.
Ecology Comments: 72% of tagged individuals were recovered with 8 km of tagging site in Missouri study (Becker 1983).
Habitat Type: Freshwater
Non-Migrant: N
Locally Migrant: N
Long Distance Migrant: N
Riverine Habitat(s): BIG RIVER, Low gradient, MEDIUM RIVER, Moderate gradient, Pool, Riffle
Lacustrine Habitat(s): Shallow water
Special Habitat Factors: Benthic
Habitat Comments: Most abundant in large and medium-sized, low- to moderate-gradient rivers and reservoirs. Highest growth rates generally occur in turbid, relatively shallow areas and in lower portions of streams (Lee and Terrell 1987). Adults occur in deep holes created by swirling currents, often among or near piles of drift, tangled timber, or other cover. Young often found in rocky and sandy runs and riffles (Becker 1983). See Lee and Terrell (1987) for a habitat suitability index model.

Spawns in secluded shelters and dark places such as hollow logs, riverbank holes, rock crevices, and among submerged timber, at depths of 2-5 m.

Adult Food Habits: Invertivore, Piscivore
Immature Food Habits: Invertivore, Piscivore
Food Comments: Eats mainly fishes and crustaceans (especially crayfish); may sit-and-wait on bottom or actively forage at night, even in shallow riffles. Adults eats piscivorous; smaller individuals eat fishes and benthic macroinvertebrates; young-of-year eat mainly aquatic insect larvae. (Becker 1983, Trautman 1981, Smith 1979). Adults move from deep water or cover to feed in riffles and pool shallows at night (Lee and Terrell 1987). In Arizona, preyed on reintroduced razorback suckers (Marsh and Brooks 1989).
Adult Phenology: Nocturnal
Immature Phenology: Nocturnal
Phenology Comments: Feeds mainly at night but also during day when water is turbid (Sublette et al. 1990).
Length: 141 centimeters
Economic Attributes
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Economic Comments: Has not been reared commercially due to high level of cannibalism (Sublette et al. 1990).
Management Summary Not yet assessed
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Population/Occurrence Delineation
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Group Name: Large Catfishes

Use Class: Not applicable
Subtype(s): Spawning area
Minimum Criteria for an Occurrence: Occurrences are based on evidence of historical presence, or current and likely recurring presence, at a given location. Such evidence minimally includes collection or reliable observation and documentation of one or more individuals (including eggs and larvae) in appropriate habitat.
Mapping Guidance: Use collection/observation points, habitat considerations, and judgment of knowledgeable biologists to determine the area (occupied habitat) that should be mapped as the occurrence. Widely separated points can be included in a single occurrence if there is no reason to suspect the presence of a population disontinuity. Do not extend the occurrence into river segments lacking actual collection/observation points.
Separation Barriers: Dam lacking a suitable fishway; high waterfall; upland habitat.
Alternate Separation Procedure: In general, each occupied river segment that is undivided by a barrier should be treated as a single distinct occurrence, regardless of the distance between observation/collection sites. A single occurrence may include multiple tributaries.
Separation Justification: Separation procedure reflects the fact that these fishes regularly move substantial distances (dozens of kilometers or more). Becker (1983) stated that channel catfish may travel hundreds of miles upstream or downstream in rivers.

Because of the difficulty in defining suitable versus unsuitable habitat, especially with respect to dispersal, and to simplify the delineation of occurrences, a single separation procedure is used regardless of habitat suitability.

It is important to evaluate seasonal changes in habitat to ensure that an occupied habitat occurrence for a particular population does not artificially separate spawning areas and nonspawning areas as different occurrences simply because there have been no collections/observations in an intervening area that may exceed the separation distance.

Date: 02Nov2004
Author: Hammerson, G.
Notes: This Specs Group includes catfishes that often are more than 50 cm in length.
Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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Element Ecology & Life History Edition Date: 14Feb1995
Element Ecology & Life History Author(s): Hammerson, G.

Zoological data developed by NatureServe and its network of natural heritage programs (see Local Programs) and other contributors and cooperators (see Sources).

References
Help
  • Allen, C. R., S. Demarais, and R. S. Lutz. 1994. Red imported fire ant impact on wildlife: an overview. The Texas Journal of Science 46(1):51-59.

  • Anderson, Allison A., C. Hubbs, K. O. Winemiller, and R. J. Edwards. 1995. Texas freshwater fish assemblages following three decades of environmental change. The Southwest Naturalist 40(3):314-321.

  • Becker, G. C. 1983. Fishes of Wisconsin. Univ. Wisconsin Press, Madison. 1052 pp.

  • CROSS, F.B., AND J.T. COLLINS. 1975. FISHES IN KANSAS. UNIV. KANS. MUS.NAT.HIST., PUB.ED.SERIES NO.3.

  • CROSS, F.B.1967.HANDBOOK OF FISHES IN KANSAS. E. RAYMOND HALL.UNIVERSITY OF KANSAS MUSEUM OF NATURAL HISTORY, LAWRENCE, KANSAS.

  • Cooper, E.L. 1983. Fishes of Pennsylvania. Penn State Univ. Press, University Park, PA.

  • Dextrase, A.J. 2005. DRAFT COSSARO Candidate Species at Risk Evaluation Form for Flathead Catfish (Pylodictis olivaris). Species At Risk Unit, Biodiversity Section, Fish and Wildlife Branch. Prepared for Committee on the Status of Species at Risk in Ontario (COSSARO), Ontario Ministry of Natural Resources, Peterborough. 22 October, 8 pp.

  • Douglas, Neil H. 1974. Freshwater fishes of Louisiana. Claitor's publ. div. Baton Rouge, Louisiana. 443 pp.

  • Etnier, David A. and Wayne C. Starnes. 1993. The Fishes of Tennessee. University of Tennessee Press, Knoxville. 681 pp.

  • Gerking, Shelby D. 1945. Distribution of Fishes of Indiana. In Investigations of Indiana Lakes and Streams. 3(1): 1-137. Indiana Department of Conservation, Division of Fish and Game, Indianapolis and Department of Zoology, Indiana University, Bloomington.

  • Goodchild, C. D. 1993. Status report on the flathead catfish Pylodictis olivaris in Canada. Committee on the Status of Endangered Wildlife in Canada (COSEWIC). 20 pp.

  • Goodchild, C.D. 1992. Status of the Flathead Catfish, Pylodictis olivaris, in Canada. Committee on the Status of Endangered Wildlife in Canada, Canadian Wildlife Service, Ottawa, Ontario. 15 pp.

  • Goodchild, C.D. 1993. Status of the Flathead Catfish, Pylodictis olivaris, in Canada. Canadian Field-Naturalist 107(4):410-416.

  • HUBBS, CLARK, EDIE MARSH-MATTHEWS, WILLIAM J. MATTHEWS, AND ALLISON A. ANDERSON. 1997. CHANGES IN FISH ASSEMBLAGES IN EAST TEXAS STREAMS FROM 1953 TO 1986. TEXAS J. SCI. 49(3)SUPPL.:67-84.

  • Lee, L. A., and J. W. Terrell. 1987. Habitat suitability index models: flathead catfish. U.S. Fish and Wildlife Service Biological Report 82(10.152). 39 pp.

  • Lundberg, J. G. 1992. The phylogeny of ictalurid catfishes: a synthesis of recent work. Pages 392-420 in R.L. Mayden, editor. Systematics, historical ecology, and North American freshwater fishes. Stanford University Press, Stanford, California. xxvi + 969 pp.

  • MORIARTY, LOREN J. AND KIRK O. WINEMILLER. 1997. SPATIAL AND TEMPORAL VARIATION IN FISH ASSEMBLAGE STRUCTURE IN VILLAGE CREEK, HARDIN COUNTY, TEXAS. TEXAS J. SCI. 49(3)SUPPL.: 85-110.

  • Manooch, C. S., III. 1984. Fisherman's guide. Fishes of the southeastern United States. North Carolina State Museum of Natural History, Raleigh. 362 pp.

  • Marsh, P. C., and J. E. Brooks. 1989. Predation by ictalurid catfishes as a deterrent to re-establishment of hatchery-reared razorback suckers. Southwestern Naturalist 34:188-195.

  • Muncy, R. J. 1957. Distribution and movements of channel and flathead catfish in the Des Moines River, Boone County, Iowa. Iowa State University, Ames. PhD Thesis. 118 pp.

  • Nelson, J. S., E. J. Crossman, H. Espinosa-Perez, L. T. Findley, C. R. Gilbert, R. N. Lea, and J. D. Williams. 2004. Common and scientific names of fishes from the United States, Canada, and Mexico. American Fisheries Society, Special Publication 29, Bethesda, Maryland. 386 pp.

  • PFLIEGER,W.L.1975. THE FISHES OF MISSOURI. SULLIVAN, MARK. MISSOURI DEPARTMENT OF CONSERVATION.

  • Page, L. M., H. Espinosa-Pérez, L. T. Findley, C. R. Gilbert, R. N. Lea, N. E. Mandrak, R. L. Mayden, and J. S. Nelson. 2013. Common and scientific names of fishes from the United States, Canada, and Mexico. Seventh edition. American Fisheries Society, Special Publication 34, Bethesda, Maryland.

  • Page, L. M., and B. M. Burr. 1991. A field guide to freshwater fishes: North America north of Mexico. Houghton Mifflin Company, Boston, Massachusetts. 432 pp.

  • Page, L. M., and B. M. Burr. 2011. Peterson field guide to freshwater fishes of North America north of Mexico. Second edition. Houghton Mifflin Harcourt, Boston. xix + 663 pp.

  • Page, LM, H.Espinoza-Perez, L.Findley, C.Gilbert, R. Lea, N. Mandrak, R.Mayden and J.Nelson. 2013. Common and scientific names of fishes from the United States, Canada, and Mexico, 7th edition. American Fisheries Society, Special Publication 34, Bethesda, Maryland.

  • RHODES, KEVIN AND CLARK HUBBS. 1992. RECOVERY OF PECOS RIVER FISHES FROM A RED TIDE FISH KILL. SOUTHWEST. NAT. 37(2):178-187.

  • ROSS, STEPHEN T. 1996. INLAND FISHES OF MISSISSIPPI. SELECTED SPECIES ACCOUNTS. COAUTHORED WITH W.M. BRENNEMAM, W.T. SLACK, M.T. O'CONNELL, AND T.L. PETERSON. ILLUSTRATED BY D.G. ROSS. DRAFT COPY.

  • Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea, and W.B. Scott. 1991. Common and scientific names of fishes from the United States and Canada. American Fisheries Society, Special Publication 20. 183 pp.

  • Simon, Thomas P. 2011. Fishes of Indiana. Indiana University Press. Bloomington, 345 pp.

  • VALDES, CANTU, NORA E. AND KIRK O. WINEMILLER. 1997. STRUCTURE AND HABITAT ASSOCIATIONS OF DEVILS RIVER FISH ASSEMBLAGES. SOUTHWEST. NAT. 42(3):265-278.

References for Watershed Distribution Map
  • Becker, G. C. 1983. Fishes of Wisconsin. University of Wisconsin Press, Madison. 1,052 pp.

  • Boschung, H. T., and R. L. Mayden. 2004. Fishes of Alabama. Smithsonian Institution Press, Washington, D.C. 960 pp.

  • Burr, B. M., and M. L. Warren, Jr. 1986a. Distributional atlas of Kentucky fishes. Kentucky Nature Preserves Commission, Scientific and Technical Series No. 4, Frankfort, Kentucky. 398 pp.

  • Cooper, E. L. 1983. Fishes of Pennsylvania and the northeastern United States. Pennsylvania State University Press, University Park. 243 pp.

  • Cross, F. B., and J. T. Collins. 1995. Fishes in Kansas. Second Edition, revised. University of Kansas Museum of Natural History. xvii + 315 pp.

  • Douglas, N. H. 1974. Freshwater fishes of Louisiana. Claitor's Publishing Division, Baton Rouge, Louisiana. 443 pp.

  • Etnier, D. A., and W. C. Starnes. 1993. The fishes of Tennessee. University of Tennessee Press, Knoxville, Tennessee. xiv + 681 pp.

  • Fago, D. 2000. Relative abundance and distribution of fishes in Wisconsin. Fish Distribution Database to year 2000. Wisconsin Department of Natural Resources.

  • Harlan, J. R., E. B. Speaker, and J. Mayhew. 1987. Iowa fish and fishing. Iowa Conservation Commission, Des Moines, Iowa. 323 pp.

  • Jenkins, R. E., and N. M. Burkhead. 1994. Freshwater fishes of Virginia. American Fisheries Society, Bethesda, Maryland. xxiii + 1079 pp.

  • Lee, D. S., C. R. Gilbert, C. H. Hocutt, R. E. Jenkins, D. E. McAllister, and J. R. Stauffer, Jr. 1980. Atlas of North American freshwater fishes. North Carolina State Museum of Natural History, Raleigh, North Carolina. i-x + 854 pp.

  • Menhinick, E. F. 1991. The freshwater fishes of North Carolina. North Carolina Wildlife Resources Commission. 227 pp.

  • Mettee, M. F., P. E. O'Neil, and J. M. Pierson. 1996. Fishes of Alabama and the Mobile Basin. Oxmoor House, Birmingham, Alabama. 820 pp.

  • Pflieger, W. L. 1975. The fishes of Missouri. Missouri Department of Conservation. Columbia, Missouri. viii + 343 pp.

  • Robison, H. W. and T. M. Buchanan. 1988. Fishes of Arkansas. The University of Arkansas Press, Fayetteville, Arkansas. 536 pp.

  • Ross, S. T., and W. M. Brenneman. 1991. Distribution of freshwater fishes in Mississippi. Freshwater Fisheries Report No. 108. D-J Project Completion Report F-69. Mississippi Department of Wildlife and Freshwater Fisheries and Parks. Jackson, Mississippi. 548 pp.

  • Smith, P. W. 1979. The fishes of Illinois. University of Illinois Press, Urbana. 314 pp.

  • Stauffer, J. R., Jr., J. M. Boltz, and L. R. White. 1995. The fishes of West Virginia. Proceedings of the Academy of Natural Sciences of Philadelphia 146:1-389.

  • Sublette, J. E., M. D Hatch, and M. Sublette. 1990. The fishes of New Mexico. University New Mexico Press, Albuquerque, New Mexico. 393 pp.

  • Trautman, M. B. 1981. The fishes of Ohio. Second edition. Ohio State University Press, Columbus, Ohio. 782 pp.

Use Guidelines & Citation

Use Guidelines and Citation

The Small Print: Trademark, Copyright, Citation Guidelines, Restrictions on Use, and Information Disclaimer.

Note: All species and ecological community data presented in NatureServe Explorer at http://explorer.natureserve.org were updated to be current with NatureServe's central databases as of March 2019.
Note: This report was printed on

Trademark Notice: "NatureServe", NatureServe Explorer, The NatureServe logo, and all other names of NatureServe programs referenced herein are trademarks of NatureServe. Any other product or company names mentioned herein are the trademarks of their respective owners.

Copyright Notice: Copyright © 2019 NatureServe, 2511 Richmond (Jefferson Davis) Highway, Suite 930, Arlington, VA 22202, U.S.A. All Rights Reserved. Each document delivered from this server or web site may contain other proprietary notices and copyright information relating to that document. The following citation should be used in any published materials which reference the web site.

Citation for data on website including State Distribution, Watershed, and Reptile Range maps:
NatureServe. 2019. NatureServe Explorer: An online encyclopedia of life [web application]. Version 7.1. NatureServe, Arlington, Virginia. Available http://explorer.natureserve.org. (Accessed:

Citation for Bird Range Maps of North America:
Ridgely, R.S., T.F. Allnutt, T. Brooks, D.K. McNicol, D.W. Mehlman, B.E. Young, and J.R. Zook. 2003. Digital Distribution Maps of the Birds of the Western Hemisphere, version 1.0. NatureServe, Arlington, Virginia, USA.

Acknowledgement Statement for Bird Range Maps of North America:
"Data provided by NatureServe in collaboration with Robert Ridgely, James Zook, The Nature Conservancy - Migratory Bird Program, Conservation International - CABS, World Wildlife Fund - US, and Environment Canada - WILDSPACE."

Citation for Mammal Range Maps of North America:
Patterson, B.D., G. Ceballos, W. Sechrest, M.F. Tognelli, T. Brooks, L. Luna, P. Ortega, I. Salazar, and B.E. Young. 2003. Digital Distribution Maps of the Mammals of the Western Hemisphere, version 1.0. NatureServe, Arlington, Virginia, USA.

Acknowledgement Statement for Mammal Range Maps of North America:
"Data provided by NatureServe in collaboration with Bruce Patterson, Wes Sechrest, Marcelo Tognelli, Gerardo Ceballos, The Nature Conservancy-Migratory Bird Program, Conservation International-CABS, World Wildlife Fund-US, and Environment Canada-WILDSPACE."

Citation for Amphibian Range Maps of the Western Hemisphere:
IUCN, Conservation International, and NatureServe. 2004. Global Amphibian Assessment. IUCN, Conservation International, and NatureServe, Washington, DC and Arlington, Virginia, USA.

Acknowledgement Statement for Amphibian Range Maps of the Western Hemisphere:
"Data developed as part of the Global Amphibian Assessment and provided by IUCN-World Conservation Union, Conservation International and NatureServe."

NOTE: Full metadata for the Bird Range Maps of North America is available at:
http://www.natureserve.org/library/birdDistributionmapsmetadatav1.pdf.

Full metadata for the Mammal Range Maps of North America is available at:
http://www.natureserve.org/library/mammalsDistributionmetadatav1.pdf.

Restrictions on Use: Permission to use, copy and distribute documents delivered from this server is hereby granted under the following conditions:
  1. The above copyright notice must appear in all copies;
  2. Any use of the documents available from this server must be for informational purposes only and in no instance for commercial purposes;
  3. Some data may be downloaded to files and altered in format for analytical purposes, however the data should still be referenced using the citation above;
  4. No graphics available from this server can be used, copied or distributed separate from the accompanying text. Any rights not expressly granted herein are reserved by NatureServe. Nothing contained herein shall be construed as conferring by implication, estoppel, or otherwise any license or right under any trademark of NatureServe. No trademark owned by NatureServe may be used in advertising or promotion pertaining to the distribution of documents delivered from this server without specific advance permission from NatureServe. Except as expressly provided above, nothing contained herein shall be construed as conferring any license or right under any NatureServe copyright.
Information Warranty Disclaimer: All documents and related graphics provided by this server and any other documents which are referenced by or linked to this server are provided "as is" without warranty as to the currentness, completeness, or accuracy of any specific data. NatureServe hereby disclaims all warranties and conditions with regard to any documents provided by this server or any other documents which are referenced by or linked to this server, including but not limited to all implied warranties and conditions of merchantibility, fitness for a particular purpose, and non-infringement. NatureServe makes no representations about the suitability of the information delivered from this server or any other documents that are referenced to or linked to this server. In no event shall NatureServe be liable for any special, indirect, incidental, consequential damages, or for damages of any kind arising out of or in connection with the use or performance of information contained in any documents provided by this server or in any other documents which are referenced by or linked to this server, under any theory of liability used. NatureServe may update or make changes to the documents provided by this server at any time without notice; however, NatureServe makes no commitment to update the information contained herein. Since the data in the central databases are continually being updated, it is advisable to refresh data retrieved at least once a year after its receipt. The data provided is for planning, assessment, and informational purposes. Site specific projects or activities should be reviewed for potential environmental impacts with appropriate regulatory agencies. If ground-disturbing activities are proposed on a site, the appropriate state natural heritage program(s) or conservation data center can be contacted for a site-specific review of the project area (see Visit Local Programs).

Feedback Request: NatureServe encourages users to let us know of any errors or significant omissions that you find in the data through (see Contact Us). Your comments will be very valuable in improving the overall quality of our databases for the benefit of all users.