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

🌊 Marine 🌡️ Deep-water

Bigeye gurnard

Pterygotrigla jacad Richards & Yato, 2014
Max Length
12.9 cm
Max Weight
-
Lifespan
-
Trophic Level
3.5
Depth
240–311 m
Climate
Deep-water
Resilience
High
Vulnerability
27.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Bigeye gurnard (Pterygotrigla jacad) is a ray-finned fish of the family Triglidae. It inhabits marine (saltwater) waters in deep-water environments. This species can reach a maximum total length of 12.9 cm. It occurs at depths between 240 and 311 metres. With a trophic level of 3.5, it is a low-level carnivore, feeding on invertebrates and small organisms.

Scientific Name
Pterygotrigla jacad
Authority
Richards & Yato, 2014
Habitat
Marine
Climate
Deep-water
Body Shape
Fusiform / normal
Max Length
12.9 cm
Depth Range
240–311 m
Trophic Level
3.5
Resilience
High
Vulnerability
27.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 8 - 9; Dorsal soft rays (total): 12 - 13; Anal soft rays: 12 - 13; Vertebrae: 27 - 28. This species is distinguished by the following characters: presence of buckler in advance of D1 fin; no antrorse infraorbital spine; short anterior infraorbital spines (7-10% SL); moderate pectoral fin length (28-31% SL), first fin free ray length moderate (26% SL); large eye (34-36%HL); moderate snout length (13-14% SL); no scales on nape and breast, belly with scales; 12-14 gill rakers length moderate; body without dark pigmentation except for inner surface of pectoral fin black with clear edges and black spot on D1 (not visible on holotype) .: fusiform / normal; Cross section: angular.

🌀 Behaviour

Behavioural data for Bigeye gurnard is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

🌍 Habitat & Distribution

Marine; bathydemersal; depth range 240 - 311 m . Deep-water Indian Ocean: Nazareth amd Saya de Malha Banks.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Trophic Level
3.5±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.00955 × L3.05 (TL)
Max TL
12.9cm
Dorsal Spines
9
Dorsal Rays
13
Anal Rays
13
Vertebrae
28

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
27.00/100
Low vulnerability
Trophic Level
3.5
Predator
Body Shape
Fusiform / normal
Climate Zone
Deep-water
Described By
Richards & Yato, 2014

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Bigeye gurnard ↗
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.