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🌊 Marine 🌡️ Polar

Spotted notothen

Trematomus nicolai Boulenger, 1902
Max Length
36 cm
Max Weight
-
Lifespan
-
Trophic Level
3.6
Depth
1–420 m
Climate
Polar
Resilience
Medium
Vulnerability
51.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

A nearshore benthic species usually abundant in shelf waters of East Antartica . Adults feed primarily on amphipods, other fishes, and molluscan larvae, with lesser amount of polychaetes and mysids. They capture some prey in the water column, but are not cryopelagic.

Scientific Name
Trematomus nicolai
Authority
Boulenger, 1902
Habitat
Marine
Climate
Polar
Body Shape
Fusiform / normal
Max Length
36 cm
Depth Range
1–420 m
Trophic Level
3.6
Resilience
Medium
Vulnerability
51.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 4 - 5; Anal soft rays: 31 - 35. Body brownish, more or less distinct dark crossbars, scattered small dark spots, fins dusky, spiny dorsal blackish .: fusiform / normal.

🌀 Behaviour

Behavioural data for Spotted notothen is currently being reviewed.

🦐 Diet

Diet information for Spotted notothen is currently being compiled.

🥚 Reproduction

Reproduction data for Spotted notothen is currently being compiled.

🌍 Habitat & Distribution

Marine; demersal; depth range 1 - 420 m . Polar; 65°S - 78°S East Antarctica (some localities), but not from the Peninsula region and westward to the Ross Sea.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.6±0.53
Food Items

amphipods, other fishes, and molluscan larvae, with lesser amount of polychaetes and mysids

📐 Morphometrics

Length–Weight Relationship: W = 0.00631 × L3.21 (TL)
Max TL
36cm
Dorsal Spines
5
Anal Rays
33

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
51.00/100
Moderate-High vulnerability
Trophic Level
3.6
Predator
Body Shape
Fusiform / normal
Climate Zone
Polar
Described By
Boulenger, 1902

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