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🌊 Marine Least Concern 🌡️ Tropical

Birdled jawfish

Opistognathus nigromarginatus Rüppell, 1830
Max Length
18.6 cm
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
2–17 m
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Inhabits burrows in shallow coastal waters. Also found in sand/rubble bottoms in 2-17 m (Ref 90102).

Scientific Name
Opistognathus nigromarginatus
Authority
Rüppell, 1830
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
18.6 cm
Depth Range
2–17 m
Latitude
12°S – 30°N
Trophic Level
3.4
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 11; Dorsal soft rays (total): 14 - 15; Anal spines: 3; Anal soft rays: 14 - 15. This species is distinguished by the following characters: elongate supramaxilla and posterior end of maxilla produced as a thin flexible lamina, in adults it usually extends almost to or beyond rear margin of opercle; dorsal fin with an ocellated spot between third or fourth and eighth spines; inner lining of upper jaw and adjacent membranes with a single conspicuous black stripe that touches ventral margin of maxilla for most of its length; D Xl,14 or 15 (exceptionally 15); body with about 68-95 oblique scale rows; total gill rakers 36-45, usually 39-45 . : elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Birdled jawfish is currently being reviewed.

🦐 Diet

Diet information for Birdled jawfish is currently being compiled.

🥚 Reproduction

Reproduction data for Birdled jawfish is currently being compiled.

🌍 Habitat & Distribution

Marine; demersal; depth range 2 - 17 m . Tropical; 30°N - 12°S, 35°E - 100°E South China Sea.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.4±0.45

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
18.6cm
Dorsal Spines
11
Dorsal Rays
15
Anal Spines
3
Anal Rays
15

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2017

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.4
Predator
Body Shape
Elongated
Climate Zone
Tropical
Latitude Range
30°N – 12°S
Described By
Rüppell, 1830

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