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

🌊 Marine Near Threatened 🌡️ Tropical

Blackspotted croaker

Protonibea diacanthus Lacepède, 1802
Max Length
165 cm
Max Weight
-
Lifespan
8 yrs
Trophic Level
3.5
Depth
5–100 m
Climate
Tropical
Resilience
Medium
Vulnerability
45.00/100
Typical Length
100 cm
Depth Zone
demersal

📖 Overview

Found in coastal waters over muddy bottoms, off the sea-bed. Ascend tidal rivers and estuaries . Feed mainly on crustaceans and small fishes. Also caught with bottom trawls . Sold fresh and dried salted (swim bladder) in markets. An important food fish. Minimum depth range based on occurrence .

Scientific Name
Protonibea diacanthus
Authority
Lacepède, 1802
Habitat
Marine
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
NT
Max Length
165 cm
Lifespan
8 years
Depth Range
5–100 m
Latitude
28°S – 40°N
Trophic Level
3.5
Resilience
Medium
Vulnerability
45.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 10 - 11; Dorsal soft rays (total): 22 - 25; Anal spines: 2; Anal soft rays: 7. 7-8 gill rakers on the lower limb of the first arch.: fusiform / normal.

🌀 Behaviour

Behavioural data for Blackspotted croaker 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; brackish; demersal; depth range 5 - 100 m . Tropical; 40°N - 28°S, 47°E - 154°E West Pacific: west coast of the Persian Gulf and along the coasts of India and Sri Lanka, north to Japan and south through the Philippines and Borneo to New Guinea and northern Australia.

🌿 Ecology

Zone Preferences
🌊 Marine 🌿 Brackish ⬇️ Benthic
Trophic Level
3.5±0.6
Food Items

crustaceans and small fishes

📐 Morphometrics

Length–Weight Relationship: W = 0.00832 × L3.06 (TL)
Max TL
165cm
Dorsal Spines
11
Dorsal Rays
24
Anal Spines
2
Anal Rays
7

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Near Threatened
Assessment Date
2018

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
45.00/100
Moderate vulnerability
Trophic Level
3.5
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Latitude Range
40°N – 28°S
Described By
Lacepède, 1802

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Black Jewfish · Blackspotted Croaker · Croaker · Jew Fish · Slate-cod Croaker · Speckled Drum · Spotted Croaker · Two-spined Jewfish
🇫🇷French Courbine Pintade
🇯🇵Japanese Gomanibe · ゴマニベ
🇪🇸Spanish Corvina Pintada

Scientific Synonyms

Scientific Name Author Year Status
Corvina catalea Cuvier 1829 Synonym
Corvina nigromaculata Borodin 1930 Synonym
Corvina platycephala Cuvier 1830 Heterotypic
Johnius cataleus Cuvier 1829 Synonym
Johnius diacanthus Lacepède 1802 Synonym
Johnius valenciennii Eydoux & Souleyet 1850 Synonym
Lutjanus diacanthus Lacepède 1802 Synonym
Nibea diacanthus Lacepède 1802 Synonym
Pseudosciaena diacanthus Lacepède 1802 Synonym
Sciaena antarctica rex Whitley 1945 Synonym
Sciaena diacanthus Lacepède 1802 Synonym
Sciaena goma Tanaka 1915 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 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 Blackspotted croaker ↗
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.