New 🐟 Mercury Safety Guide & Omega-3 Rankings Updated for 2026. View Omega-3 Rankings →

🌊 Marine Least Concern 🌡️ Tropical

Australian threadfin

Polydactylus multiradiatus Günther, 1860
Max Length
21 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
10–56 m
Climate
Tropical
Resilience
Medium
Vulnerability
18.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Inhabits coastal waters over sand or mud bottoms. Feeds on prawns. Often taken in association with Penaeus prawns in the Gulf of Carpentaria.

Scientific Name
Polydactylus multiradiatus
Authority
Günther, 1860
Habitat
Marine
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
21 cm
Depth Range
10–56 m
Trophic Level
3.1
Resilience
Medium
Vulnerability
18.00/100
Salinity
30–40 ppt

🐟 Physical Description

: fusiform / normal.

🌀 Behaviour

Behavioural data for Australian threadfin is currently being reviewed.

🦐 Diet

Diet information for Australian threadfin is currently being compiled.

🥚 Reproduction

Sex change occurs between 12-14 cm SL .

🌍 Habitat & Distribution

Marine; brackish; demersal; depth range 10 - 56 m , usually 10 - 56 m . Tropical; 4°S - 34°S, 113°E - 154°E South Wales) (Ref.

🌿 Ecology

Zone Preferences
🌊 Marine 🌿 Brackish ⬇️ Benthic
Trophic Level
3.1±0.3
Food Items

prawns

📐 Morphometrics

Length–Weight Relationship: W = 0.00813 × L3.12 (TL)
Max TL
21cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2009

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
18.00/100
Low vulnerability
Trophic Level
3.1
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Günther, 1860

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Australian threadfin ↗
Suggest an Edit

Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.

Link to a scientific paper, FishBase, or other authoritative source
Report an Issue

Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.