Tasmanian smelt (Retropinna tasmanica) fish species and information / pictures of Tasmanian smelt - Retropinna tasmanica

Tasmanian smelt (Retropinna tasmanica) fish species information

Scientific Name
Retropinna tasmanica

Common Name
Tasmanian smelt

Biology
Inhabits estuaries and the lower reaches of coastal streams. Occurs in lowland streams, forming schools that feeds at or near the surface on insects and zooplankton. Found among the annual Tasmanian whitebait migrations in shoals with Lovettia seali and various galaxiids. Most of the life cycle is spent at the sea. The species is thought to have an anadromous life cycle involving upstream migration of adults from the sea prior to spawning. Newly hatched larvae are carried on tides out to sea where they develop to maturity.

Classification

Classified By
McCulloch, 1920
Class
Ray-finned fishes (Actinopterygii)
Order
Smelts (Osmeriformes)
Family
New Zealand smelts (Retropinnidae)

Distribution

Region
Oceania
Distribution
Oceania: Endemic to Tasmania.
Range
41°S - 44°S

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
Marine; freshwater; brackish; demersal; anadromous
Trophic Level
3.29 s.e. 0.42 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
7.0 cm
Common Length
5.5 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 (19 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