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🌊 Marine 🌡️ Polar

Pithead

Trematomus peninsulae Daniels, 1981
Max Length
17 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
50–400 m
Climate
Polar
Resilience
Medium
Vulnerability
33.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Pithead (Trematomus peninsulae), first described by Daniels, 1981 is a medium-sized fish in the family Nototheniidae (order Perciformes). Adults typically reach 17.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 50 to 400 metres. It occurs in Polar waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus.

Scientific Name
Trematomus peninsulae
Authority
Daniels, 1981
Habitat
Marine
Climate
Polar
Body Shape
Fusiform / normal
Max Length
17 cm
Depth Range
50–400 m
Trophic Level
3.2
Resilience
Medium
Vulnerability
33.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 4 - 6; Dorsal soft rays (total): 34 - 36; Anal soft rays: 33 - 35; Vertebrae: 50 - 53. Light and dark areas of purple and silver. Silvery below .: fusiform / normal.

🌀 Behaviour

Behavioural data for Pithead 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; pelagic-oceanic; depth range 50 - 400 m . Polar; 61°S - 67°S west coast of the Antarctic Peninsula and islands of the Palmer Archipelago.

🌿 Ecology

Zone Preferences
🌊 Marine 🐟 Pelagic
Trophic Level
3.2±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00537 × L3.24 (TL)
Max TL
17cm
Dorsal Spines
5
Dorsal Rays
35
Anal Rays
34
Vertebrae
52

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
33.00/100
Low vulnerability
Trophic Level
3.2
Predator
Body Shape
Fusiform / normal
Climate Zone
Polar
Described By
Daniels, 1981

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