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🌊 Marine Least Concern 🌡️ Tropical

Bivalve pearlfish

Onuxodon margaritiferae Rendahl, 1921
Max Length
10 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
-
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Uncommon species inhabiting coastal waters. Found in the mantle cavity of pearl oysters (Pinctada spp.) and other large bivalves as well as in holothurians . It feeds on crustaceans and polychaetes and is reported to tend towards sexual pairing in the host .

Scientific Name
Onuxodon margaritiferae
Authority
Rendahl, 1921
Habitat
Marine
Climate
Tropical
IUCN Status
LC
Max Length
10 cm
Latitude
23°S – 28°N
Trophic Level
3.3
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

Eel-like, shallow to moderate body depth; adults small, less than 100 mm, trunk compressed; 1 to several large symphyseal fangs on premaxilla and dentary; anterior swim bladder modified into 'rockerbone'; predorsal bone present; pectoral fin rays supported by numerous small distal radials . Precaudal vertebrae 18-20; relatively short and deep bodied .: eel-like; Cross section: compressed.

🌀 Behaviour

Behavioural data for Bivalve pearlfish is currently being reviewed.

🦐 Diet

Diet information for Bivalve pearlfish is currently being compiled.

🥚 Reproduction

Reproduction data for Bivalve pearlfish is currently being compiled.

🌍 Habitat & Distribution

Marine; reef-associated. Tropical; 28°N - 23°S Indian Ocean: restricted to western Australia.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.3±0.41
Food Items

crustaceans and polychaetes and is reported to tend towards sexual pairing in the host (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00102 × L3.06 (TL)
Max TL
10cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2019

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.3
Predator
Climate Zone
Tropical
Latitude Range
28°N – 23°S
Described By
Rendahl, 1921

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