Cui-ui (Chasmistes cujus)

Scientific name: Chasmistes cujus Cope, 1883

The Cui-ui (Chasmistes cujus) is a freshwater fish of the family Catostomidae. Native range: North America, Pyramid and Winnemucca lakes in Nevada, USA. International trade banned (CITES I, since 1.7.1975).

Biology

Occurs in deep water. Spawns only around margin of Pyramid Lake in Nevada, USA but formerly made spectacular spawning runs up Truckee River in Nevada, USA. Populations were subject to intensive fishing in the 19th and early 20th century; habitats have been greatly altered by water development projects; species is now endangered.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Chasmistes cujus
Family
Catostomidae (Suckers)
Order
Cypriniformes (Carps)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
67.0
Environment
Freshwater; demersal; potamodromous
Climate
Temperate
Distribution
North America: Pyramid and Winnemucca lakes in Nevada, USA. International trade banned (CITES I, since 1.7.1975)
Conservation status (IUCN)
Critically Endangered (CR) (B1+2b)
Threat to humans
Harmless
Uses
Fisheries: minor commercial
Resilience
Very Low, minimum population doubling time more than 14 years (tm=14-17; Fec=30,000)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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