Notropis heterolepis - Eigenmann and Eigenmann, 1893
Blacknose Shiner
Taxonomic Status: Accepted
Related ITIS Name(s): Notropis heterolepis Eigenmann and Eigenmann, 1893 (TSN 163446)
French Common Names: museau noir
Unique Identifier: ELEMENT_GLOBAL.2.101074
Element Code: AFCJB28530
Informal Taxonomy: Animals, Vertebrates - Fishes - Bony Fishes - Minnows and Carps
Kingdom Phylum Class Order Family Genus
Animalia Craniata Actinopterygii Cypriniformes Cyprinidae Notropis
Genus Size: D - Medium to large genus (21+ species)
Check this box to expand all report sections:
Concept Reference
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: Notropis heterolepis
Taxonomic Comments: Populations in Middle Cumberland River system were described as a separate species, N. rupestris, by Page and Beckham (1987).
Conservation Status

NatureServe Status

Global Status: G5
Global Status Last Reviewed: 18Aug2015
Global Status Last Changed: 16Jan2013
Ranking Methodology Used: Ranked by inspection
Rounded Global Status: G5 - Secure
Reasons: Large range from southcentral Canada to Nova Scotia, south to Kansas (formerly), Missouri, Ohio, and New York; extirpated and declining acros most of the southern part of the range, but still common in areas of Minnesota, Wisconsin, Michigan, and very common in many provinces in Canada; threats include land alterations that result in turbidity, siltation, and loss of aquatic vegetation.
Nation: United States
National Status: N4 (05Sep1996)
Nation: Canada
National Status: N5 (22Dec2017)

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 Illinois (S2), Indiana (S3), Iowa (S2), Kansas (SX), Maine (S3), Michigan (S4), Minnesota (SNR), Missouri (S2), Nebraska (S1), New Hampshire (SNA), New York (S2S3), North Dakota (S3), Ohio (S1), Pennsylvania (S1), South Dakota (S1), Vermont (S1), Wisconsin (S5)
Canada Manitoba (S5), New Brunswick (S4), Nova Scotia (S4), Ontario (S5), Quebec (S4S5), Saskatchewan (S4S5)

Other Statuses

IUCN Red List Category: LC - Least concern

NatureServe Global Conservation Status Factors

Range Extent: 200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
Range Extent Comments: Atlantic, Great Lakes, Hudson Bay, and Mississippi River basins from Nova Scotia to Saskatchewan, south to Ohio, Illinois, south-central Missouri, and (formerly) Kansas; common in some parts of range (especially Ontario, Michigan, and Wisconsin), disappearing from southern part (Page and Burr 1991). A record from Kentucky likely is erroneous (Burr and Warren 1986).

Area of Occupancy: Unknown 4-km2 grid cells
Area of Occupancy Comments:  

Number of Occurrences: 81 to >300
Number of Occurrences Comments: Historically known from hundreds of collection sites, with concentrations from Minnesota to Ontario and sparse occurrences in most of the rest of the range (Smith 1979, Lee et al. 1980, Trautman 1981, Becker 1983, Smith 1985, Cross and Collins 1995, Pflieger 1997). Occurs as isolated, highly localized populations (Pflieger 1997).

Population Size: 10,000 to >1,000,000 individuals
Population Size Comments: Common in lakes and slow streams in most of Wisconsin (but not in southern Wisconsin) (Becker 1983).

Number of Occurrences with Good Viability/Integrity: Unknown

Overall Threat Impact: Medium
Overall Threat Impact Comments: Decline in south is due to increased turbidity, siltation of stream bottoms, and resulting disappearance of aquatic vegetation (Becker 1983, Herkert 1992). Pflieger (1997) mentioned land disturbance (clearing, logging, overgrazing) and subsequent siltation and loss of vegetated backwaters as causes for the decline in the Ozarks of Missouri. He stated that ongoing loss of native grass cover in the prairie region of Missouri will affect long-term survival of the species in that state. Lakeshore development may be contributing to the decline (Eddy and Underhill 1974).

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

Long-term Trend: Decline of 50-70%
Long-term Trend Comments: In Missouri, the species disappeared from several Ozark streams that were occupied prior to 1900 (Pflieger 1997). Formerly widespread in Iowa and eastern South Dakota but now quite restricted in distribution, and across the entire southern part of the range, from Pennsylvania to Kansas, the species has become scarce (see Becker 1983). Species has disappeared from several locations in southeastern Wisconsin where it occurred in the early 1900s (Becker 1983). Last observed in Kansas in the late 1800s (Cross and Collins 1995).

Environmental Specificity: Narrow. Specialist or community with key requirements common.

Other NatureServe Conservation Status Information

Global Range: (200,000-2,500,000 square km (about 80,000-1,000,000 square miles)) Atlantic, Great Lakes, Hudson Bay, and Mississippi River basins from Nova Scotia to Saskatchewan, south to Ohio, Illinois, south-central Missouri, and (formerly) Kansas; common in some parts of range (especially Ontario, Michigan, and Wisconsin), disappearing from southern part (Page and Burr 1991). A record from Kentucky likely is erroneous (Burr and Warren 1986).

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 IA, IL, IN, KSextirpated, ME, MI, MN, MO, ND, NE, NHexotic, NY, OH, PA, SD, VT, WI
Canada MB, NB, NS, ON, QC, SK

Range Map
No map available.

U.S. Distribution by County Help
State County Name (FIPS Code)
IA Benton (19011)*, Black Hawk (19013)*, Boone (19015)*, Bremer (19017)*, Buena Vista (19021)*, Butler (19023)*, Cedar (19031)*, Clay (19041), Clinton (19045)*, Dallas (19049)*, Delaware (19055)*, Dickinson (19059)*, Franklin (19069)*, Linn (19113)*, Monona (19133)*, Muscatine (19139)*, Osceola (19143)*, Palo Alto (19147), Plymouth (19149)*, Polk (19153)*, Story (19169)*, Webster (19187)*, Woodbury (19193)*, Wright (19197)*
IL Boone (17007)*, Bureau (17011), DuPage (17043), Grundy (17063), Henry (17073), Iroquois (17075)*, Kankakee (17091), La Salle (17099), Lake (17097), Mchenry (17111), Ogle (17141)*, Stark (17175), Stephenson (17177), Whiteside (17195)*, Will (17197)
IN Elkhart (18039), Kosciusko (18085)
MO Audrain (29007)*, Benton (29015), Callaway (29027), Camden (29029), Dade (29057)*, Hickory (29085), Laclede (29105)*, Madison (29123)*, Maries (29125)*, Montgomery (29139), Morgan (29141)*, Pettis (29159), Phelps (29161), Pulaski (29169), St. Clair (29185), Texas (29215), Wright (29229)
ND Ransom (38073)*, Richland (38077)*, Stutsman (38093)*
NE Antelope (31003)*, Brown (31017)*, Buffalo (31019)*, Cherry (31031), Dawes (31045), Holt (31089)*, Keya Paha (31103), Knox (31107)*, Lancaster (31109)*, Madison (31119)*, Rock (31149)*, Saline (31151)*, Seward (31159)*, Sheridan (31161), Stanton (31167)*
NY Chautauqua (36013), Chemung (36015), Clinton (36019), Erie (36029), Franklin (36033), Jefferson (36045), Lewis (36049), Niagara (36063), Oswego (36075), Schuyler (36097), St. Lawrence (36089), Sullivan (36105), Ulster (36111), Warren (36113), Wayne (36117), Yates (36123)
OH Franklin (39049), Medina (39103)*, Ottawa (39123)*, Ross (39141)*, Wood (39173)*
PA Crawford (42039)*, Erie (42049)
SD Bon Homme (46009)*, Hutchinson (46067)*, Roberts (46109), Todd (46121), Tripp (46123), Yankton (46135)*
VT Addison (50001), Chittenden (50007), Franklin (50011), Rutland (50021), Washington (50023), Windsor (50027)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
01 Upper St. John (01010001), Allagash (01010002), Aroostook (01010004), Meduxnekeag (01010005), East Branch Penobscot (01020002), Lower Penobscot (01020005), Lower Kennebec (01030003), Upper Androscoggin (01040001), St. Croix (01050001), Maine Coastal (01050002), Black-Ottauquechee (01080106)+
02 Lake George (02010001), Winooski (02010003), Ausable (02010004)*, Lamoille (02010005), Great Chazy-Saranac (02010006), Missisquoi (02010007), Upper Hudson (02020001)+, Sacandaga (02020002)*, Mohawk (02020004), Rondout (02020007)+, Middle Delaware-Mongaup-Brodhead (02040104)+, Chenango (02050102)*, Owego-Wappasening (02050103), Tioga (02050104)*, Chemung (02050105)+
04 Baptism-Brule (04010101), Beaver-Lester (04010102), St. Louis (04010201), Cloquet (04010202), Beartrap-Nemadji (04010301), Bad-Montreal (04010302), Black-Presque Isle (04020101), Ontonagon (04020102), Keweenaw Peninsula (04020103), Sturgeon (04020104), Dead-Kelsey (04020105), Betsy-Chocolay (04020201), Waiska (04020203), Lake Superior (04020300), Manitowoc-Sheboygan (04030101), Door-Kewaunee (04030102), Duck-Pensaukee (04030103), Oconto (04030104), Peshtigo (04030105), Brule (04030106), Menominee (04030108), Fishdam-Sturgeon (04030112), Upper Fox (04030201), Wolf (04030202), Little Calumet-Galien (04040001)*, Pike-Root (04040002)*, Milwaukee (04040003), St. Joseph (04050001)+, Black-Macatawa (04050002), Kalamazoo (04050003), Upper Grand (04050004), Maple (04050005), Lower Grand (04050006), Thornapple (04050007), Pere Marquette-White (04060101), Muskegon (04060102), Manistee (04060103), Betsie-Platte (04060104), Boardman-Charlevoix (04060105), Manistique (04060106), Brevoort-Millecoquins (04060107), Lake Michigan (04060200)*, Carp-Pine (04070002), Lone Lake-Ocqueoc (04070003), Cheboygan (04070004), Black (04070005), Thunder Bay (04070006), Au Sable (04070007), Au Gres-Rifle (04080101), Kawkawlin-Pine (04080102), Pigeon-Wiscoggin (04080103), Birch-Willow (04080104), Tittabawassee (04080201), Pine (04080202), Shiawassee (04080203), Flint (04080204), Cass (04080205), Saginaw (04080206), St. Clair (04090001), Clinton (04090003), Detroit (04090004), Huron (04090005), Ottawa-Stony (04100001), Raisin (04100002), Upper Maumee (04100005)*, Lower Maumee (04100009)+*, Cedar-Portage (04100010)+*, Sandusky (04100011)*, Black-Rocky (04110001)+, Ashtabula-Chagrin (04110003)*, Chautauqua-Conneaut (04120101), Cattaraugus (04120102), Buffalo-Eighteenmile (04120103)*, Niagara (04120104)+, Lake Erie (04120200), Oak Orchard-Twelvemile (04130001)*, Upper Genesee (04130002)*, Lower Genesee (04130003)*, Irondequoit-Ninemile (04140101)+, Salmon-Sandy (04140102)+, Seneca (04140201)+, Oneida (04140202)+, Oswego (04140203), Black (04150101)+, Chaumont-Perch (04150102)*, Upper St. Lawrence (04150301)+, Oswegatchie (04150302)+, Indian (04150303)+, Grass (04150304)+, Raquette (04150305)+, St. Regis (04150306)+, English-Salmon (04150307)+, Chateaugay-English (04150308)+, Mettawee River (04150401)+, Winooski River (04150403)+, Missiquoi River (04150407)+, Lake Champlain (04150408)+
05 Upper Allegheny (05010001)*, Conewango (05010002)+, French (05010004)+, Tuscarawas (05040001)*, Upper Scioto (05060001)+, Lower Scioto (05060002)+, Paint (05060003)*, Upper Great Miami (05080001)*, Little Miami (05090202)*, Eel (05120104), Tippecanoe (05120106), Middle Wabash-Little Vermilion (05120108)
07 Mississippi Headwaters (07010101), Prairie-Willow (07010103), Elk-Nokasippi (07010104), Crow Wing (07010106), Platte-Spunk (07010201), Clearwater-Elk (07010203), Twin Cities (07010206), Rum (07010207), Upper St. Croix (07030001), Namekagon (07030002), Lower St. Croix (07030005), La Crosse-Pine (07040006), Black (07040007), Root (07040008), Upper Chippewa (07050001), Flambeau (07050002), South Fork Flambeau (07050003), Jump (07050004), Lower Chippewa (07050005), Eau Claire (07050006), Red Cedar (07050007), Coon-Yellow (07060001), Grant-Little Maquoketa (07060003), Maquoketa (07060006)+*, Upper Wisconsin (07070001), Lake Dubay (07070002), Castle Rock (07070003), Lower Wisconsin (07070005), Copperas-Duck (07080101)+*, Lower Wapsipinicon (07080103)+*, South Skunk (07080105)+*, Upper Cedar (07080201)+*, Shell Rock (07080202)+*, West Fork Cedar (07080204)+*, Middle Cedar (07080205)+*, Lower Cedar (07080206)+*, Upper Iowa (07080207)+*, Upper Rock (07090001), Crawfish (07090002), Pecatonica (07090003)+, Sugar (07090004)*, Lower Rock (07090005)+*, Kishwaukee (07090006)+*, Green (07090007)+, Upper Des Moines (07100002)+, East Fork Des Moines (07100003)*, Middle Des Moines (07100004)+*, North Raccoon (07100006)+*, Lake Red Rock (07100008)+*, Kankakee (07120001)+, Iroquois (07120002)+*, Des Plaines (07120004)+, Upper Illinois (07120005)+, Upper Fox (07120006)+, Lower Illinois-Senachwine Lake (07130001)+, Spoon (07130005)+, Meramec (07140102)*, Whitewater (07140107)+*
09 Bois De Sioux (09020101)+, Otter Tail (09020103), Buffalo (09020106), Eastern Wild Rice (09020108), Lower Sheyenne (09020204)+, Rainy Headwaters (09030001), Vermilion (09030002)
10 Upper White (10140201)+, Ponca (10150001), Upper Niobrara (10150003)+, Middle Niobrara (10150004)+, Snake (10150005)+, Keya Paha (10150006)+, Lower Niobrara (10150007)+*, James Headwaters (10160001)+*, Pipestem (10160002)+*, Upper James (10160003)+, Lower James (10160011)+, Lewis and Clark Lake (10170101)+, Salt (10200203)+*, South Loup (10210004)+*, Mud (10210005)+*, Upper North Loup (10210006)+, Upper Elkhorn (10220001)+, North Fork Elkhorn (10220002)+*, Lower Elkhorn (10220003)+*, Blackbird-Soldier (10230001)+*, Floyd (10230002)+*, Little Sioux (10230003)+, Monona-Harrison Ditch (10230004)+*, Maple (10230005)+*, Boyer (10230007)+*, Smoky Hill Headwaters (10260001)*, Middle Big Blue (10270202)+*, West Fork Big Blue (10270203)+*, Turkey (10270204)+*, Harry S. Missouri (10290105)+, Sac (10290106)+, Pomme De Terre (10290107)+, Lake of the Ozarks (10290109)+, Niangua (10290110)+*, Lower Osage (10290111)+*, Upper Gasconade (10290201)+, Big Piney (10290202)+, Lower Gasconade (10290203)+, Lower Missouri-Moreau (10300102)+, Lamine (10300103)+, Lower Missouri (10300200)+
11 Middle Arkansas-Slate (11030013)*
+ 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
Reproduction Comments: Spawns in spring and summer. Sexually mature in 1 year.
Habitat Type: Freshwater
Non-Migrant: N
Locally Migrant: N
Long Distance Migrant: N
Riverine Habitat(s): CREEK, MEDIUM RIVER, Moderate gradient, Pool
Lacustrine Habitat(s): Shallow water
Habitat Comments: Typically in cool weedy creeks, small rivers, and lakes, usually over sand; tolerant of oxygen depletion in winterkill lakes. Spawns probably over sandy places (Becker 1983).
Adult Food Habits: Invertivore
Immature Food Habits: Invertivore
Food Comments: Eats mainly various small invertebrates, and some plant material; probably feeds mainly on bottom or in beds of aquatic vegetation (Becker 1983, Smith 1979).
Length: 10 centimeters
Economic Attributes Not yet assessed
Management Summary Not yet assessed
Population/Occurrence Delineation
Group Name: Small Cyprinids

Use Class: Not applicable
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.
Separation Barriers: Dam lacking a suitable fishway; high waterfall; upland habitat. For some species (e.g., slender chub), an impoundment may constitute a barrier. For others (e.g., flame chub) a stream larger than 4th order may be a barrier.
Separation Distance for Unsuitable Habitat: 10 km
Separation Distance for Suitable Habitat: 10 km
Separation Justification: Data on dispersal and other movements generally are not available. In some species, individuals may migrate variable distances between spawning areas and nonspawning habitats.

Separation distances (in aquatic kilometers) for cyprinids are arbitrary but reflect the presumption that movements and appropriate separation distances generally should increase with fish size. Hence small, medium, and large cyprinids, respectively, have increasingly large separation distances. Separation distance reflects the likely low probability that two occupied locations separated by less than several kilometers of aquatic habitat would represent truly independent populations over the long term.

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 distance is used regardless of habitat quality.

Occupied locations that are separated by a gap of 10 km or more of any aquatic habitat that is not known to be occupied represent different occurrences. However, 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: 21Sep2004
Author: Hammerson, G.
Population/Occurrence Viability
U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
NatureServe Conservation Status Factors Edition Date: 05Sep2001
NatureServe Conservation Status Factors Author: Hammerson, G.; rev. M. Anions 16Jan2013
Element Ecology & Life History Edition Date: 19Nov1993
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).

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References for Watershed Distribution Map
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  • Smith, P. W. 1979. The fishes of Illinois. University of Illinois Press, Urbana. 314 pp.

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Note: All species and ecological community data presented in NatureServe Explorer at 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 (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:

Full metadata for the Mammal Range Maps of North America is available at:

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