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🌊 Marine Least Concern 🌡️ Subtropical

Rainbow jawfish

Opistognathus evermanni Jordan & Snyder, 1902
Max Length
11 cm
Max Weight
Lifespan
Trophic Level
3.4
Depth
10–30 m
Climate
Subtropical
Resilience
Vulnerability
10.00/100
Typical Length
Depth Zone
demersal

📖 Overview

Overview information for Rainbow jawfish is currently being compiled by our editorial team.

Scientific Name
Opistognathus evermanni
Authority
Jordan & Snyder, 1902
Habitat
Marine
Climate
Subtropical
IUCN Status
LC
Max Length
11 cm
Depth Range
10–30 m
Trophic Level
3.4
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 11; Dorsal soft rays (total): 10 - 12; Anal spines: 2; Anal soft rays: 10 - 11; Vertebrae: 26. This species is distinguished by the following characters: with a rigid upper jaw lacking flexible lamina posteriorly, extending about 1.0 eye diameter behind posterior margin of orbit; infraorbitals are moderately tubular, with large openings for sensory canals, the third infraorbital largest with very short posterolateral projecting arm ending with sensory canal opening, no suborbital shelf; D XI,10-12; A II,10-11; vertebrae 10 + 16; scale rows in horizontal series about 41-47; nape naked; outer premaxillary teeth are relatively straight with distinctly blunt tips. Colouration: soft dorsal and anal fins each with two pale stripes; caudal fin with one pale band; pelvic fin bicolored, dark except for the pale unbranched outer two rays and interradial membrane .Cross section: compressed.

🌀 Behaviour

Behavioural data for Rainbow jawfish is currently being reviewed.

🦐 Diet

Diet information for Rainbow jawfish is currently being compiled.

🥚 Reproduction

Employ mouthbrooding to care for their young .

🌍 Habitat & Distribution

Marine; demersal; depth range 10 - 30 m . Subtropical West Pacific: India, Japan, Hong Kong, Vietnam, and the Philippines.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.4±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.01122 × L3.04 (TL)
Max TL
11cm
Dorsal Spines
11
Dorsal Rays
11
Anal Spines
2
Anal Rays
11
Vertebrae
26

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2024

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.4
Predator
Climate Zone
Subtropical
Described By
Jordan & Snyder, 1902

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