Catostomus commersonii (Lacepède, 1803)
White sucker
Catostomus commersonii
photo by Seelig, C.

Family:  Catostomidae (Suckers), subfamily: Catostominae
Max. size:  65 cm TL (male/unsexed); max.weight: 2,940.0 g; max. reported age: 12 years
Environment:  demersal; freshwater; brackish
Distribution:  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.
Diagnosis:   
Biology:  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).
IUCN Red List Status: Least Concern (LC); Date assessed: 26 October 2011 Ref. (130435)
Threat to humans:  harmless
Country info:   
 


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