SPECIES ID / Freshwater Fish of the Fraser ValleySucker Family (Catostomidae)Family originated in North America where they are a widespread and diverse group5 species in British Columbia, 3 in the Fraser Valley2 species in northern Asia believed to have dispersed across Bering Sea land bridge during periods of low sea level.Do not tolerate salinityMost eat invertebrates but a few, including Mountain Sucker, scrape algae from rocksIdentification Tips:No spines or adipose finMouth on underside of head with fleshy lips Largescale Sucker Mountain Sucker Salish Sucker–––––– Primary Information Source: McPhail, J.D. 2007. The Freshwater Fishes of British Columbia. University of Alberta Press. Edmonton, Alberta.