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

Redmouth grouper

Aethaloperca rogaa Fabricius, 1775
Max Length
60 cm
Max Weight
-
Lifespan
-
Trophic Level
4.1
Depth
3–60 m
Climate
Tropical
Resilience
Medium
Vulnerability
49.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Adults are found in coastal reefs and lagoons, often on silty habitat , in or near caves and holes in the reef. They feed mainly on small fishes (including Pempheris sp.), also on stomatopods (Pseudosquilla sp.) ; and crustaceans . Preliminary data indicate that mature individuals spawn at any time of the year and mature (females?) at about 35 cm SL . Small juveniles mimic Centropyge vrolikii , and C. nox until they outgrow their model in size . Taken as part of the live reef food fish trade centered in China and In Hong Kong and are occasionally found in markets . They are caught with hook-and-line, spear, and probably in traps .

Scientific Name
Aethaloperca rogaa
Authority
Fabricius, 1775
Habitat
Marine
Climate
Tropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
60 cm
Depth Range
3–60 m
Latitude
31°S – 31°N
Trophic Level
4.1
Resilience
Medium
Vulnerability
49.00/100
Migration
Non-migratory
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 9; Dorsal soft rays (total): 17 - 18; Anal spines: 3; Anal soft rays: 8 - 9. This species is distinguished by the following characters: deep and compressed body with greatest depth 2.1-2.4 in SL; dorsal head profile steep, straight, or slightly concave along snout and distinctly convex from eye to dorsal fin; longitudinal scale series 94-104; gill rakers 8-11 + 15-17; in adults the middle dorsal and anal-fin rays are elongated, giving these fins an angular profile, with the rear margin almost vertical; caudal fin truncate, 8 branched rays in upper lobe and 7 in lower lobe; pectoral fins asymmetric, 17-19 rays. Colour of body dark brown to black, occasionally with an orange cast, usually with a pale vertical bar on side of abdomen; inside of mouth, gill cavity and upper jaw membranes reddish orange; juveniles with a broad white posterior margin on caudal fin and a narrow white margin on soft dorsal fin (Ref 5222).: short and / or deep; Cross section: compressed.

🌀 Behaviour

Behavioural data for Redmouth grouper is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

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

🌍 Habitat & Distribution

Marine; reef-associated; non-migratory; depth range 3 - 60 m , usually 3 - 60 m . Tropical; 31°N - 31°S, 30°E - 178°W West Pacific: Red Sea to South Africa and east to the Gilbert Islands.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Migration
Non-migratory
Trophic Level
4.1±0.68
Food Items

small fishes (including Pempheris sp

📐 Morphometrics

Length–Weight Relationship: W = 0.01778 × L3.01 (TL)
Max TL
60cm
Dorsal Spines
9
Dorsal Rays
18
Anal Spines
3
Anal Rays
9

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2016

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
49.00/100
Moderate-High vulnerability
Trophic Level
4.1
Apex / Top predator
Body Shape
Short and / or deep
Climate Zone
Tropical
Latitude Range
31°N – 31°S
Described By
Fabricius, 1775

🎣 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 Red-flushed Cod · Red-flushed Grouper · Red-flushed Rock-cod · Red-flushed Rockcod · Redmouth Groper · Redmouth grouper · Redmouth Rockcod
🇸🇦Arabic Hamour · Sheneenoh · هامور أحمر الفم
🌍CES kanic rudotlamý
🇩🇰Danish Rødmundet koralbars
🇩🇪German Rotmaul-Zackenbarsch
🇫🇷French Cabot gueule rouge, Vielle roga · Vieille roga · Vieille roga, Vieille Rogaa · Vieille Rogaa
🌍HEB דקרן אדום-לוע
🇮🇹Italian Cernia bocca rossa · Cernia soldato
🇯🇵Japanese Kurohata · クロハタ
🇳🇱Dutch Roodbektandbaars
🇵🇹Portuguese Garoupa-de-boca-vermelha
🇷🇺Russian Красноротая эталоперка · Красноротый групер
🌍SOM Caalo
🌍SWA Chewa
🌍THA ปลากะรังเลือดนก
🇨🇳Chinese 煙鱠 · 煙鱸

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 8 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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View all observations for Redmouth grouper ↗
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