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💧 Freshwater Extinct 🌡️ Subtropical

New Zealand grayling

Prototroctes oxyrhynchus Günther, 1870
Max Length
22 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
-
Climate
Subtropical
Resilience
Medium
Vulnerability
34.00/100
Typical Length
-
Depth Zone
-

📖 Overview

New Zealand grayling (Prototroctes oxyrhynchus) is a ray-finned fish of the family Retropinnidae. It inhabits freshwater waters. This species can reach a maximum total length of 22 cm. With a trophic level of 3, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Extinct on the IUCN Red List.

Scientific Name
Prototroctes oxyrhynchus
Authority
Günther, 1870
Habitat
Freshwater
Climate
Subtropical
IUCN Status
EX
Max Length
22 cm
Trophic Level
3
Resilience
Medium
Vulnerability
34.00/100
Migration
Amphidromous

🐟 Physical Description

Physical description for New Zealand grayling is currently being compiled.

🌀 Behaviour

Behavioural data for New Zealand grayling is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; brackish; benthopelagic; amphidromous . Subtropical; 34°S - 47°S endemic to New Zealand.

🌿 Ecology

Zone Preferences
💧 Freshwater 🌿 Brackish
Migration
Amphidromous
Trophic Level
3±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00372 × L3.14 (TL)
Max TL
22cm

🛡️ Conservation Assessment

IUCN Category
Extinct
Assessment Date
2014

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
34.00/100
Low vulnerability
Trophic Level
3
Predator
Climate Zone
Subtropical
Described By
Günther, 1870

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