Scientific Name
Cyprinodon rubrofluviatilis

Common Name
Red River pupfish

Biology
Inhabits shallow, sandy pools and runs of headwaters, creeks, and small to medium rivers. Often found in extremely shallow and hot (to 37?C) water (Ref. 5723). Consumes midge and other insect larvae (Ref. 79012). Not a seasonal killifish. Is difficult to maintain in aquarium (Ref. 27139).

Classification

Classified By

Fowler, 1916

Class

Ray-finned fishes (Actinopterygii)

Order

Live bearers, Killifishes and Rivulines (Cyprinodontiformes)

Family

Pupfishes (Cyprinodontidae)

Distribution

Region

North America

Distribution

North America: found only in upper Red and Brazos River drainages in Oklahoma and Texas, USA.

Range

36°N - 33°N

Environment

Climate

Temperate

Water Temperature From

10 °C

Water Temperature To

30 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

benthopelagic

Environment

Freshwater; benthopelagic; non-migratory

Trophic Level

2.93 s.e. 0.32 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

True

Physical Size and Genetics

Maximum Length

6.0 cm

Common Length

3.3 cm

Phylogenetic Diversity Index

PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Aquarium: commercial

Vulnerability

Low to moderate vulnerability (32 of 100)

Resilience

High, minimum population doubling time less than 15 months (Assuming tm

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated