Cui-ui (Chasmistes cujus) fish species and information / pictures of Cui-ui - Chasmistes cujus

Cui-ui (Chasmistes cujus) fish species information

Scientific Name
Chasmistes cujus

Common Name
Cui-ui

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 (Ref. 47054).

Classification

Classified By

Cope, 1883

Class

Ray-finned fishes (Actinopterygii)

Order

Carps (Cypriniformes)

Family

Suckers (Catostomidae)

Distribution

Region

North America

Distribution

North America: Pyramid and Winnemucca lakes in Nevada, USA. International trade banned (CITES I, since 1.7.1975)

Range

41°N - 40°N

Environment

Climate

Temperate

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

demersal

Environment

Freshwater; demersal; potamodromous (Ref. 51243)

Trophic Level

3.06 s.e. 0.40 Based on size and trophs of closest relatives

Occurs in Marine / Salt water

False

Occurs in Brackish water

False

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

67.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5312 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: minor commercial

Vulnerability

High to very high vulnerability (70 of 100)

Resilience

Very Low, minimum population doubling time more than 14 years (tm=14-17; Fec=30,000)

Threat To Humans

Harmless

IUCN Red List Status

Critically Endangered (CR) (B1+2b)