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

🌊 Marine Least Concern 🌡️ Tropical

Yellow jawfish

Opistognathus gilberti Böhlke, 1967
Max Length
6.4 cm
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
-
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Yellow jawfish (Opistognathus gilberti) is a ray-finned fish of the family Opistognathidae. It inhabits marine (saltwater) waters in reef-associated environments. This species can reach a maximum total length of 6.4 cm. With a trophic level of 3.4, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.

Scientific Name
Opistognathus gilberti
Authority
Böhlke, 1967
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
6.4 cm
Trophic Level
3.4
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 11; Dorsal soft rays (total): 12 - 14; Anal spines: 2; Anal soft rays: 13 - 14. Females gray, shading to whitish ventrally on head and abdomen, with a median yellow stripe in dorsal and anal fins, and a large area of yellow in caudal fin. Males head and body reddish gray, darkening posteriorly to black, except abdomen which is whitish; caudal fin black except for a wedge-shaped white marking dorsally and ventrally at fin base; dorsal and anal fins white, the dorsal with a round black spot between fifth and sixth dorsal spines .: elongated.

🌀 Behaviour

Behavioural data for Yellow jawfish is currently being reviewed.

🦐 Diet

Diet information for Yellow jawfish is currently being compiled.

🥚 Reproduction

Employ mouthbrooding to care for their young .

🌍 Habitat & Distribution

Marine; reef-associated, usually 33 - ? m . Tropical Central Atlantic: Bahamas, islands and reefs of the western Caribbean Sea, Jamaica, and Puerto Rico.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.4±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
6.4cm
Dorsal Spines
11
Dorsal Rays
13
Anal Spines
2
Anal Rays
14

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2012

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.4
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Böhlke, 1967

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Yellow Jawfish
🌍CES studnař Gilbertův
🇩🇰Danish Gul kæbefisk
🇵🇹Portuguese Bocão-amarelo
🇪🇸Spanish bocón amarillo

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 2 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Yellow jawfish ↗
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.