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🌊 Marine Least Concern 🌡️ Tropical

Castelnau's jawfish

Opistognathus castelnaui Bleeker, 1860
Max Length
25 cm
Max Weight
Lifespan
Trophic Level
3.7
Depth
20–100 m
Climate
Tropical
Resilience
Vulnerability
21.00/100
Typical Length
Depth Zone
demersal

📖 Overview

Inhabits open sand and rubble substrates in about 20-25 meters . May be found in depths greater than 100 m . Mouthbrooders .

Scientific Name
Opistognathus castelnaui
Authority
Bleeker, 1860
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
25 cm
Depth Range
20–100 m
Trophic Level
3.7
Vulnerability
21.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 11; Dorsal soft rays (total): 14; Anal spines: 3; Anal soft rays: 14; Vertebrae: 28. This species is distinguished by the following characters: elongated supramaxilla and posterior end of maxilla produced as a thin flexible lamina; upper jaw's inner lining and adjacent membranes with one or two conspicuous black stripes; dorsal half of dorsal fin usually dark except for narrow pale margin, remainder of fin pale and often with 8 or 9 evenly spaced dark blotches that extend onto basal fourth to third of fin and slightly onto dorsum; D XI,14; body with about 90-11 0 oblique scale rows; total gill rakers 28-35 .: elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Castelnau's jawfish is currently being reviewed.

🦐 Diet

Diet information for Castelnau's jawfish is currently being compiled.

🥚 Reproduction

Employ mouthbrooding to care for their young .

🌍 Habitat & Distribution

Marine; demersal; depth range 20 - 100 m . Tropical West Pacific: eastern Australia to the Ryukyus, Taiwan, Philippines, Malaysia, and Indonesia.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.7±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
25cm
Dorsal Spines
11
Dorsal Rays
14
Anal Spines
3
Anal Rays
14
Vertebrae
28

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2023

📊 Population Risk & Fisheries

Fishing Vulnerability
21.00/100
Low vulnerability
Trophic Level
3.7
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Bleeker, 1860

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Opisthognathus suluensis Herre 1933 Synonym

🗺️ 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
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View all observations for Castelnau's jawfish ↗
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