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🌊 Marine Least Concern 🌡️ Tropical

Cleftbelly trevally

Atropus atropos Bloch & Schneider, 1801
Max Length
31.6 cm
Max Weight
Lifespan
Trophic Level
3.6
Depth
5–100 m
Climate
Tropical
Resilience
High
Vulnerability
18.00/100
Typical Length
Depth Zone
pelagic

📖 Overview

Adults are common in shallow coastal waters where they often swim near the surface. They feed mainly on shrimps, copepods, decapod crustaceans and small fish.

Scientific Name
Atropus atropos
Authority
Bloch & Schneider, 1801
Habitat
Marine
Climate
Tropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
31.6 cm
Depth Range
5–100 m
Latitude
12°S – 40°N
Trophic Level
3.6
Resilience
High
Vulnerability
18.00/100
Migration
Amphidromous
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 9; Dorsal soft rays (total): 21 - 22; Anal spines: 3; Anal soft rays: 17 - 18. This species is easily recognized by its long pelvic fin which fit into a groove along the midline of the belly when depressed. Scutes are present along its straight lateral line. Adult males have prolonged middle rays in the soft dorsal and anal fins. This species attains 25 cm in SL.: short and / or deep; Cross section: compressed.

🌀 Behaviour

Behavioural data for Cleftbelly trevally is currently being reviewed.

🦐 Diet

Diet information for Cleftbelly trevally is currently being compiled.

🥚 Reproduction

Size at Maturity
21cm TL

🌍 Habitat & Distribution

Marine; pelagic-neritic; amphidromous ; depth range 5 - 100 m . Tropical; 40°N - 12°S, 47°E - 143°E West Pacific.

🌿 Ecology

Zone Preferences
🌊 Marine 🐟 Pelagic
Migration
Amphidromous
Trophic Level
3.6±0.52
Food Items

shrimps, copepods, decapod crustaceans and small fish

📐 Morphometrics

Length–Weight Relationship: W = 0.02089 × L2.86 (TL)
Max TL
31.6cm
Dorsal Spines
9
Dorsal Rays
22
Anal Spines
3
Anal Rays
18

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2017

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
18.00/100
Low vulnerability
Trophic Level
3.6
Predator
Body Shape
Short and / or deep
Climate Zone
Tropical
Latitude Range
40°N – 12°S
Described By
Bloch & Schneider, 1801

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