Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Cypriniformes
(Carps) > Cyprinidae
(Minnows or carps) > Leuciscinae
Etymology: Semotilus: Greek, sema = banner (dorsal fin) + Greek, tilos = spotted; used by Rafinesque (Ref. 45335); atromaculatus: From the words ater, meaning black; and maculatus, spotted (Ref. 10294).
Environment / Climate / Range
Freshwater; demersal. Temperate; ? - 30°C (Ref. 35682); 55°N - 31°N
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 30.3 cm TL male/unsexed; (Ref. 10294); common length : 19.1 cm TL male/unsexed; (Ref. 12193); max. reported age: 8 years (Ref. 12193)
North America: most of eastern USA and southeastern Canada in Atlantic, Great Lakes, Hudson Bay, Mississippi and Gulf basins as far as Manitoba, Montana, Wyoming, Colorado, Oklahoma, and Texas, but absent from southern Georgia and peninsular Florida; upper Pecos and Canadian River systems, New Mexico.
Inhabits rocky and sandy pools of headwaters, creeks and small rivers (Ref. 5723); mostly found in tiny, intermittent streams. Young feed on small aquatic invertebrates. Adults consume small fish, crayfish and other large invertebrates (Ref. 10294). One of the most common fishes in eastern North America (Ref. 5723).
Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p.
IUCN Red List Status (Ref. 90363)
CITES (Ref. 94142)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
CollaboratorsPicturesStamps, CoinsSoundsCiguateraSpeedSwim. typeGill areaOtolithsBrainsVision
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01072 (0.00607 - 0.01892), b=3.05 (2.89 - 3.21), based on LWR estimates for species & Subfamily-BS (Ref. 93245
Trophic Level (Ref. 69278
): 4.0 ±0.7 se; Based on diet studies.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (tmax=8).
Vulnerability (Ref. 59153
): Moderate vulnerability (38 of 100) .