Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Cypriniformes
(Carps) > Catostomidae
(Suckers) > Catostominae
Etymology: Catostomus: Greek, kata = down + Greek, stoma = mouth (Ref. 45335); commersonii: Named after P. Commerson, early french naturalist.
Environment / Climate / Range
Freshwater; demersal; catadromous (Ref. 51243), usually ? - 30 m (Ref. 1998). Temperate; ? - 29°C (Ref. 35682); 68°N - 34°N
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 23 - ? cm
Max length : 65.0 cm TL male/unsexed; (Ref. 10294); common length : 40.7 cm TL male/unsexed; (Ref. 12193); max. published weight: 2.9 kg (Ref. 4699); max. reported age: 12 years (Ref. 12193)
North America: throughout most of Canada to the Atlantic Coast, south through North Carolina to New Mexico in the USA, becoming less common in the southern High Plains.
Inhabits a wide range of habitats, from rocky pools and riffles of headwaters to large lakes. Usually occurs in small, clear, cool creeks and small to medium rivers. May be found at a depth greater than 45 m (Ref. 1998). Moves to shallower water near sunrise and sunset to feed. Fry (1.2 cm in length) feed on plankton and other small invertebrates; bottom feeding commences upon reaching a length of 1.6-1.8 cm. Preyed upon by birds, fishes, lamprey, and mammals (Ref. 1998). Flesh is white, flaky, and sweet (Ref. 1998).
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)
Threat to humans
Fisheries: minor commercial; aquaculture: commercial; gamefish: yes; bait: occasionally
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01410 (0.01118 - 0.01779), b=2.99 (2.92 - 3.06), based on LWR estimates for this species (Ref. 93245
Trophic Level (Ref. 69278
): 2.8 ±0.4 se; Based on diet studies.
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (tm=6; tmax=12).
Vulnerability (Ref. 59153
): High vulnerability (57 of 100) .