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🌊 Marine 🌡️ Deep-water

Tonga escolar

Tongaichthys robustus Nakamura & Fujii, 1983
Max Length
30 cm
Max Weight
-
Lifespan
-
Trophic Level
3.9
Depth
288–312 m
Climate
Deep-water
Resilience
Medium
Vulnerability
30.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Tonga escolar (Tongaichthys robustus) is a ray-finned fish of the family Gempylidae. It inhabits marine (saltwater) waters in deep-water environments. This species can reach a maximum total length of 30 cm. It occurs at depths between 288 and 312 metres. With a trophic level of 3.9, it is a mid-level predator.

Scientific Name
Tongaichthys robustus
Authority
Nakamura & Fujii, 1983
Habitat
Marine
Climate
Deep-water
Body Shape
Fusiform / normal
Max Length
30 cm
Depth Range
288–312 m
Trophic Level
3.9
Resilience
Medium
Vulnerability
30.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 16 - 17; Dorsal soft rays (total): 14 - 17; Anal spines: 1; Anal soft rays: 14 - 16; Vertebrae: 33. Head relatively large. Scales on cheeks enlarged, elongate and slightly overlapping. Color is dark brown above, slightly paler below.: fusiform / normal; Cross section: compressed.

🌀 Behaviour

Behavioural data for Tonga escolar is currently being reviewed.

🦐 Diet

Diet information for Tonga escolar is currently being compiled.

🥚 Reproduction

Reproduction data for Tonga escolar is currently being compiled.

🌍 Habitat & Distribution

Marine; bathypelagic; depth range 288 - 312 m . Deep-water; 12°S - 27°S, 144°E - 174°W Pacific Ocean: Several specimens (38 individuals) were reported from the Tonga Ridge; around Fiji; 1 specimen from off Flinders Reef, Queensland (17°33'S, 149°46'E, CSIRO no.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Trophic Level
3.9±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.01023 × L3 (TL)
Max TL
30cm
Dorsal Spines
17
Dorsal Rays
16
Anal Spines
1
Anal Rays
15
Vertebrae
33

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
30.00/100
Low vulnerability
Trophic Level
3.9
Predator
Body Shape
Fusiform / normal
Climate Zone
Deep-water
Described By
Nakamura & Fujii, 1983

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Tonga escolar
🇫🇷French Escolier tonga
🇷🇺Russian Красный тонгаихт

🗺️ 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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