Scientific Name
Retropinna retropinna

Common Name
Cucumberfish

Biology
Migrates into estuaries and lower reaches of rivers during spring.

Classification

Classified By

Richardson, 1848

Class

Ray-finned fishes (Actinopterygii)

Order

Smelts (Osmeriformes)

Family

New Zealand smelts (Retropinnidae)

Distribution

Region

Southwest Pacific

Distribution

Southwest Pacific: endemic to New Zealand.

Range

34°S - 47°S

Environment

Climate

Subtropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

demersal

Environment

Marine; freshwater; brackish; demersal; anadromous (Ref. 51243)

Trophic Level

3.15 s.e. 0.39 Based on food items.

Occurs in Marine / Salt water

True

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

8.6 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.6406 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: of no interest; bait: usually

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