Scientific Name
Prototroctes oxyrhynchus

Common Name
New Zealand grayling

Biology
Now extinct (Ref. 57073). The last recorded specimen was brought to the British Museum in the 1930's (Ref. 57073).

Classification

Classified By

G?nther, 1870

Class

Ray-finned fishes (Actinopterygii)

Order

Smelts (Osmeriformes)

Family

New Zealand smelts (Retropinnidae)

Distribution

Region

Oceania

Distribution

Oceania: 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

benthopelagic

Environment

Marine; freshwater; brackish; benthopelagic; anadromous (Ref. 46888)

Trophic Level

3.01 s.e. 0.36 Based on size and trophs of closest relatives

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

22.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.7656 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Moderate vulnerability (40 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Extinct (EX)