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🌊 Marine Least Concern 🌡️ Tropical

Western wobbegong

Orectolobus hutchinsi Last, Chidlow & Compagno, 2006
Max Length
149 cm
Max Weight
-
Lifespan
-
Trophic Level
4
Depth
0–106 m
Climate
Tropical
Resilience
-
Vulnerability
72.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Males mature at about 111 cm TL. Young born at 22-26 cm TL (mean 24.1 cm TL based on 40 specimens). Caught as by-catch of local gillnet, longline, rock lobster and recreational fisheries .

Scientific Name
Orectolobus hutchinsi
Authority
Last, Chidlow & Compagno, 2006
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
149 cm
Depth Range
0–106 m
Trophic Level
4
Vulnerability
72.00/100
Salinity
30–40 ppt

🐟 Physical Description

Diagnosis: A moderate-sized species with the following characters: yellowish-brown when fresh with well-defined, darker brown saddles; absence fo white spots, blotches or reticulations on the fins and body; nasal barbel bilobed; postspiracular lobes are simple, reduced or rudimentary; distance across preorbital lobe group 1.2-1.3 times interspace between preorbital group and postspiracular lobe, 13-15 times base length of anterior postspiracular lobe; base of anterior postspiracular lobe 11-12 in its distance from postorbital group, 4.9-7 in its distance from posterior postspiracular lobe; mouth width 4.7-10.2 times preoral distance; warty tubercles absent on back of adult; juveniles with rows of elevated denticles or poorly defined warty tubercles on back; dorsal fins raked posteriorly; first dorsal fin over rear half of pelvic -fin bases; interdorsal space 0.38-0.56 times anal-fin base length; anal-fin inner margin 0.8-1.1 times anal-fin posterior margin; teeth in upper jaw 25-27, those in the medial row at symphysis rudimentary; spiral valve turns 26-28; monospondylous centra 48-50 .: elongated.

🌀 Behaviour

Behavioural data for Western wobbegong is currently being reviewed.

🦐 Diet

Diet information for Western wobbegong is currently being compiled.

🥚 Reproduction

Reproduction data for Western wobbegong is currently being compiled.

🌍 Habitat & Distribution

Marine; demersal; depth range 0 - 106 m , usually 0 - 79 m . Tropical Indian Ocean: Western Australia.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
4±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
149cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2025

📊 Population Risk & Fisheries

Fishing Vulnerability
72.00/100
High vulnerability
Trophic Level
4
Apex / Top predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Last, Chidlow & Compagno, 2006

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