Scientific Name
Rhinichthys obtusus

Common Name
Western blacknose dace

Biology
Inhabit cool streams. Feeds on aquatic insects (Ref. 54729). Survives well in aquarium conditions and the pink lateral band of mature males make them attractive for native fish aquaria (Ref. 54726).

Classification

Classified By

Agassiz, 1854

Class

Ray-finned fishes (Actinopterygii)

Order

Carps (Cypriniformes)

Family

Minnows or carps (Cyprinidae)

Distribution

Region

North America

Distribution

North America: primarily in upper Mississippi and Ohio drainages, U.S.A and Manitoba, Canada.

Range

Unknown

Environment

Climate

Subtropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

2 m

Depth To - meters

5 m

Zone

pelagic

Environment

Freshwater; pelagic; depth range 2 - 5 m (Ref. 54726)

Trophic Level

3.13 s.e. 0.37 Based on food items.

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

8.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5020 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Low vulnerability (25 of 100)

Resilience

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated