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Overview

Comprehensive Description

Biology

In sheltered coastal bays and sand and mud slopes in depths over 20 m (Ref. 48635); also in coastal trawling grounds. Juveniles sometimes in shallow estuaries on algae reefs (Ref. 48635). Sometimes forms schools. Feeds on bottom-living invertebrates. Sexually mature upon reaching 15-17 cm SL. Sometimes caught with handlines and marketed dried (Ref. 9775) or fresh. In Hong Kong live fish markets (Ref. 27253).
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Distribution

Indo-West Pacific: southern Japan to the Indo-Malaysian region, probably eastward to India. Has often been confused w/ the young of Gymnocranius grandoculis, hence its distributional limits are somewhat obscure. Records of Gymnocranius griseus from the Western Indian Ocean probably pertain to Gymnocranius grandoculis.
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Eastern Indian Ocean, Western Pacific: India east to Philippines, north to southern Japan. (Records from Western Indian Ocean and Red Sea probably based on *G. grandoculis*).
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Physical Description

Morphology

Dorsal spines (total): 10; Dorsal soft rays (total): 9 - 10; Analspines: 3; Analsoft rays: 9 - 10
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Size

Maximum size: 350 mm TL
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Max. size

35.0 cm TL (male/unsexed; (Ref. 2295))
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Diagnostic Description

Description

Found in coastal trawling grounds. Sometimes forms schools. Feeds on bottom-living invertebrates. Sexually mature upon reaching 15-17 cm SL. Sometimes caught with handlines and is occasionally marketed dried (Ref. 9775).
  • Anon. (1996). FishBase 96 [CD-ROM]. ICLARM: Los Baños, Philippines. 1 cd-rom pp.
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Eye diameter is relatively large, its diameter about equal to or slightly larger than preorbital and interorbital width. Overall color is silvery, frequently with a diffuse vivid pattern of 5 to 8 narrow dark bars on the side, including one through the eye and across the cheek. Fins are mainly clear to yellowish; sometimes there is diffuse mottling or spotting on dorsal, caudal and anal fins. Often there is a narrow brown bar across the base of the pectoral fins. Some adults possess a few scattered blue spots or scribbling on the snout and cheek (Ref. 2295). Relatively ovoid body and pointed caudal lobes are distinct (Ref. 37816).
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Ecology

Habitat

Environment

reef-associated; non-migratory; marine; depth range 20 - 80 m (Ref. 2295)
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Depth range based on 153 specimens in 1 taxon.
Water temperature and chemistry ranges based on 102 samples.

Environmental ranges
  Depth range (m): 11 - 167
  Temperature range (°C): 18.533 - 27.698
  Nitrate (umol/L): 0.164 - 15.328
  Salinity (PPS): 33.783 - 35.156
  Oxygen (ml/l): 2.617 - 4.712
  Phosphate (umol/l): 0.108 - 1.226
  Silicate (umol/l): 0.829 - 24.864

Graphical representation

Depth range (m): 11 - 167

Temperature range (°C): 18.533 - 27.698

Nitrate (umol/L): 0.164 - 15.328

Salinity (PPS): 33.783 - 35.156

Oxygen (ml/l): 2.617 - 4.712

Phosphate (umol/l): 0.108 - 1.226

Silicate (umol/l): 0.829 - 24.864
 
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Depth: 20 - 80m.
From 20 to 80 meters.

Habitat: reef-associated.
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Trophic Strategy

Found on the continental shelf (Ref. 75154).
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Diseases and Parasites

Propycnadenoides Infestaton. Parasitic infestations (protozoa, worms, etc.)
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Cucullanus Infestation. Parasitic infestations (protozoa, worms, etc.)
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Evolution and Systematics

Evolution

Classification

In Pentapodidae in <130>
  • Anon. (1996). FishBase 96 [CD-ROM]. ICLARM: Los Baños, Philippines. 1 cd-rom pp.
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Gymnocranius griseus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 5
Specimens with Barcodes: 9
Species With Barcodes: 1
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Barcode data: Gymnocranius griseus

The following is a representative barcode sequence, the centroid of all available sequences for this species.


No available public DNA sequences.

Download FASTA File
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Conservation

Threats

Not Evaluated
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: commercial; gamefish: yes
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