Razorback sucker (Xyrauchen texanus) fish species and information / pictures of Razorback sucker - Xyrauchen texanus

Razorback sucker (Xyrauchen texanus) fish species information

Scientific Name
Xyrauchen texanus

Common Name
Razorback sucker

Biology
Occurs in silt-bottomed to rock-bottomed backwaters near strong current and deep pools in medium to large rivers, and impoundments.

Classification

Classified By

Abbott, 1860

Class

Ray-finned fishes (Actinopterygii)

Order

Carps (Cypriniformes)

Family

Suckers (Catostomidae)

Distribution

Region

North America

Distribution

North America: Formerly throughout medium to large rivers of Colorado River basin from Wyoming and Colorado in USA to Baja California in Mexico. Presently known only above Grand Canyon and in Lakes Mead, Mohave and Havasu on lower Colorado River in USA.

Range

37°N - 34°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

91.0 cm

Common Length

50.0 cm

Phylogenetic Diversity Index

PD50 = 1.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

High to very high vulnerability (67 of 100)

Resilience

Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Critically Endangered (CR) (A2ae)