Scientific Name
Hypomesus transpacificus

Common Name
Delta smelt

Biology
Adults occur in open brackish and freshwater of large channels. Diet consists of zooplankton (Ref. 33312).

Classification

Classified By

McAllister, 1963

Class

Ray-finned fishes (Actinopterygii)

Order

Smelts (Osmeriformes)

Family

Smelts (Osmeridae)

Distribution

Region

North America

Distribution

North America: Sacramento-San Joaquin Delta region in central California, USA.

Range

38°N - 37°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

pelagic

Environment

Freshwater; brackish; pelagic; anadromous (Ref. 51243)

Trophic Level

3.1 s.e. 0.25 Based on diet studies.

Occurs in Marine / Salt water

False

Occurs in Brackish water

True

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

12.0 cm

Common Length

6.3 cm

Phylogenetic Diversity Index

PD50 = 0.5313 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Low vulnerability (16 of 100)

Resilience

High, minimum population doubling time less than 15 months (tm=1; tmax=1)

Threat To Humans

Harmless

IUCN Red List Status

Endangered (EN) (B1+2cd)