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🌊 Marine Data Deficient 🌡️ Temperate

Derwent flounder

Taratretis derwentensis Last, 1978
Max Length
12 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
3–50 m
Climate
Temperate
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Derwent flounder (Taratretis derwentensis), first described by Last, 1978 is a small fish in the family Pleuronectidae (order Pleuronectiformes). Adults typically reach 12.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 3 to 50 metres. It occurs in Temperate waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Data Deficient.

Scientific Name
Taratretis derwentensis
Authority
Last, 1978
Habitat
Marine
Climate
Temperate
Body Shape
Short and / or deep
IUCN Status
DD
Max Length
12 cm
Depth Range
3–50 m
Trophic Level
3
Resilience
High
Vulnerability
10.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal soft rays (total): 69 - 80; Anal soft rays: 50 - 59. Body deep (42-51% SL). Snout not distinctly extended. Mouth small, oblique. Scales very small, rather firmly attached; ctenoid on both sides, covering all of head. Pectoral fin rays on right side 8-11, left 7-9. Caudal fin rays 14-16 .: short and / or deep; Cross section: compressed.

🌀 Behaviour

Behavioural data for Derwent flounder is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

🌍 Habitat & Distribution

Marine; demersal; depth range 3 - 50 m . Temperate Southwest Pacific: from Bermagui, New South Wales to western side of Spencer Gulf, South Australia and Tasmania.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3±0.2

📐 Morphometrics

Length–Weight Relationship: W = 0.01778 × L2.97 (TL)
Max TL
12cm
Dorsal Rays
75
Anal Rays
55

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2020

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3
Predator
Body Shape
Short and / or deep
Climate Zone
Temperate
Described By
Last, 1978

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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