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🌊 Marine Least Concern 🎣 Game Fish 🌡️ Tropical 🎣 Game Fish

Blue-lined large-eye bream

Gymnocranius grandoculis Valenciennes, 1830
Max Length
80 cm
Max Weight
5.5 kg
Lifespan
-
Trophic Level
3.8
Depth
20–170 m
Climate
Tropical
Resilience
Medium
Vulnerability
42.00/100
Typical Length
64 cm
Depth Zone
reef

📖 Overview

Inhabits offshore reefs , trawling grounds of the continental shelves and offshore rocky bottoms . Juveniles inshore on muddy substrates . Solitary or in small groups . Feeds mostly on bottom invertebrates and small fishes . Potential commercial fish if sufficient stocks can be located . Marketed fresh ; sometimes with a strong and unpleasant flavor .

Scientific Name
Gymnocranius grandoculis
Authority
Valenciennes, 1830
Habitat
Marine
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
80 cm
Max Weight
5.5 kg
Depth Range
20–170 m
Latitude
28°S – 35°N
Trophic Level
3.8
Resilience
Medium
Vulnerability
42.00/100
Migration
Non-migratory
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 10; Dorsal soft rays (total): 10; Anal spines: 3; Anal soft rays: 10. : fusiform / normal; Cross section: oval.

🌀 Behaviour

Behavioural data for Blue-lined large-eye bream 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; reef-associated; non-migratory; depth range 20 - 170 m . Tropical; 35°N - 28°S, 32°E - 134°W East Africa to southeastern Oceania and from Australia northward to Japan.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Migration
Non-migratory
Trophic Level
3.8
🧍 Solitary

📐 Morphometrics

Length–Weight Relationship: W = 0.01905 × L2.89 (TL)
Max TL
80cm
Max Weight
5,500g
Dorsal Spines
10
Dorsal Rays
10
Anal Spines
3
Anal Rays
10

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2015

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
42.00/100
Moderate vulnerability
Trophic Level
3.8
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Latitude Range
35°N – 28°S
Described By
Valenciennes, 1830

🎣 Angling Guide

Difficulty
Beginner
Fight Rating
strong pulls with head-shakes
Best Seasons
spring,summer,fall
Best Time
incoming tide, dawn and dusk
Line Weight
15-30
Rod Type
medium-heavy spinning
Hook Size
2/0-5/0
Catch & Release
✓ Recommended
Best Months
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Techniques
bottom fishing popping cork soft plastics live bait
Bait & Lures
live shrimp cut mullet soft plastic paddle-tails popping corks
Recommended Tackle
  • medium-heavy 7ft spinning rod
  • 30-50 lb braid
  • fluorocarbon leader
Where to Find Them
  • grass flats
  • oyster bars
  • marsh drains
  • deeper channel edges
Tips & Tricks
Popping cork technique attracts fish from distance. Fish moving tides.
Catch & Release Tips

Use barbless hooks, minimise air exposure, and revive fish head-first in current before release.

Regulations Summary

⚠️ Slot limits protect breeding-size fish. Verify daily bag limits.

📊 Population Dynamics

Year Region Index Notes
- - -

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Bluelined Emperor, Blue-lined large-eye bream · Robinson's Seabream · Robinson's sea bream · blue-lined large-eye bream
🇫🇷French Bec de cane à gros yeux · Bossu blanc grosse race · Capitaine Tatoué · Capitaine pissa · Empereur Tatoué · Empereur tatoué, Capitaine tatoué
🇯🇵Japanese Sazanamidai · サザナミダイ · タマメイチ

Scientific Synonyms

Scientific Name Author Year Status
Cantharus grandoculis Valenciennes 1830 Synonym
Dentex lethrinoides Bleeker 1850 Synonym
Dentex rivulatus Rüppell 1838 Synonym
Dentex robinsoni Gilchrist & Thompson 1909 Synonym
Gymnocranium grandoculis Valenciennes 1830 Synonym
Gymnocranius grandoculus Valenciennes 1830 Synonym
Gymnocranius lethrinoides Bleeker 1850 Synonym
Gymnocranius marshalli Whitley 1936 Synonym
Gymnocranius rivulatus Rüppell 1838 Synonym
Gymnocranius robinsoni Gilchrist & Thompson 1909 Synonym
Gymnocranius ruppellii Smith 1941 Synonym
Paradentex marshalli Whitley 1936 Synonym
Pentapus curtus Guichenot 1863 Synonym
Pentapus dux Valenciennes 1862 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 3 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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