Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Cypriniformes
(Carps) > Catostomidae
(Suckers) > Catostominae
Etymology: Moxostoma: Greek, myxo = to suckle + Greek, stoma = mouth (Ref. 45335); anisurum: From the words aniso, meaning unequal; and urum, tail (referring to the asymmetry of the caudal fin lobes) (Ref. 10294).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Temperate; 54°N - 32°N
North America: Great Lakes-St. Lawrence River, Hudson Bay and Mississippi River basins from Quebec and Alberta in Canada and south to northern Alabama and northern Arkansas in the USA; Atlantic Slope from Roanoke River drainage in Virginia to Altamaha River drainage in Georgia, USA.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 74.0 cm TL male/unsexed; (Ref. 40637); common length : 32.5 cm TL male/unsexed; (Ref. 12193); max. published weight: 10.8 kg (Ref. 40637); max. reported age: 10 years (Ref. 12193)
Inhabits mud-bottomed to rock-bottomed pools and runs of small to large rivers. Occasionally found in lakes (Ref. 5723, 10294). Feeds on immature midges, mayflies and caddisflies (Ref. 10294).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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. (Ref. 5723)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic Level (Ref. 69278
): 3.0 ±0.38 se; Based on food items.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (tmax=10).
Vulnerability (Ref. 59153
): High to very high vulnerability (66 of 100) .