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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Carpenter, K.E. and G.R. Allen 1989 FAO Species Catalogue. Vol. 9. Emperor fishes and large-eye breams of the world (family Lethrinidae). An annotated and illustrated catalogue of lethrinid species known to date. FAO Fish. Synop. 125(9):118 p. Rome: FAO. (Ref. 2295)
http://www.fishbase.org/references/FBRefSummary.php?id=2295&speccode=1832
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Distribution
Chagos, Kenya, Madagascar, Mozambique, Mtwapa, Seychelles, Somalia, South Africa (country), Tanzania, Ungama Bay
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MacNae, W. & M. Kalk (eds) (1958). A natural history of Inhaca Island, Mozambique. Witwatersrand Univ. Press, Johannesburg. I-iv, 163 pp.
http://www.marinespecies.org/aphia.php?p=sourcedetails&id=6266
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Anon. (2000). FishBase 2000 [CD-ROM]. ICLARM: Los Baños, Laguna, Philippines. 4 cd-roms pp.
http://www.marinespecies.org/aphia.php?p=sourcedetails&id=6542
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Smith, J.L.B. & M.M. Smith (1963). The fishes of Seychelles. Department of Ichthyology, Rhodes University. Grahamstown.
http://www.marinespecies.org/aphia.php?p=sourcedetails&id=5926
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Fulanda, B.; Ohtomi, J.; Mueni, E.; Kimani, E. (2011). Fishery trends, resource-use and management system in the Ungwana Bay fishery Kenya. Ocean & Coastal Management, vol. 54, no. 5, pp. 401-414.
http://www.marinespecies.org/aphia.php?p=sourcedetails&id=166289
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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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Carpenter, K.E. and G.R. Allen 1989 FAO Species Catalogue. Vol. 9. Emperor fishes and large-eye breams of the world (family Lethrinidae). An annotated and illustrated catalogue of lethrinid species known to date. FAO Fish. Synop. 125(9):118 p. Rome: FAO. (Ref. 2295)
http://www.fishbase.org/references/FBRefSummary.php?id=2295&speccode=1832
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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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Carpenter, K.E. and G.R. Allen 1989 FAO Species Catalogue. Vol. 9. Emperor fishes and large-eye breams of the world (family Lethrinidae). An annotated and illustrated catalogue of lethrinid species known to date. FAO Fish. Synop. 125(9):118 p. Rome: FAO. (Ref. 2295)
http://www.fishbase.org/references/FBRefSummary.php?id=2295&speccode=1832
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Size
Max. size
35.0 cm TL (male/unsexed; (Ref. 2295))
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Carpenter, K.E. and G.R. Allen 1989 FAO Species Catalogue. Vol. 9. Emperor fishes and large-eye breams of the world (family Lethrinidae). An annotated and illustrated catalogue of lethrinid species known to date. FAO Fish. Synop. 125(9):118 p. Rome: FAO. (Ref. 2295)
http://www.fishbase.org/references/FBRefSummary.php?id=2295&speccode=1832
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Diagnostic Description
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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Carpenter, K.E. and G.R. Allen 1989 FAO Species Catalogue. Vol. 9. Emperor fishes and large-eye breams of the world (family Lethrinidae). An annotated and illustrated catalogue of lethrinid species known to date. FAO Fish. Synop. 125(9):118 p. Rome: FAO. (Ref. 2295)
http://www.fishbase.org/references/FBRefSummary.php?id=2295&speccode=1832
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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).
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Anon. (1996). FishBase 96 [CD-ROM]. ICLARM: Los Baños, Philippines. 1 cd-rom pp.
http://www.marinespecies.org/aphia.php?p=sourcedetails&id=5909
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Ecology
Habitat
Environment
reef-associated; non-migratory; marine; depth range 20 - 80 m (Ref. 2295)
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Carpenter, K.E. and G.R. Allen 1989 FAO Species Catalogue. Vol. 9. Emperor fishes and large-eye breams of the world (family Lethrinidae). An annotated and illustrated catalogue of lethrinid species known to date. FAO Fish. Synop. 125(9):118 p. Rome: FAO. (Ref. 2295)
http://www.fishbase.org/references/FBRefSummary.php?id=2295&speccode=1832
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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
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
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
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
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Depth: 20 - 80m.
From 20 to 80 meters.
Habitat: reef-associated.
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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Carpenter, K.E. and G.R. Allen 1989 FAO Species Catalogue. Vol. 9. Emperor fishes and large-eye breams of the world (family Lethrinidae). An annotated and illustrated catalogue of lethrinid species known to date. FAO Fish. Synop. 125(9):118 p. Rome: FAO. (Ref. 2295)
http://www.fishbase.org/references/FBRefSummary.php?id=2295&speccode=1832
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Diseases and Parasites
Propycnadenoides Infestaton. Parasitic infestations (protozoa, worms, etc.)
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Arthur, J.R. and S. Lumanlan-Mayo 1997 Checklist of the parasites of fishes of the Philippines. FAO Fish. Tech. Pap. 369, 102 p. FAO, Rome. (Ref. 26129)
http://www.fishbase.org/references/FBRefSummary.php?id=26129&speccode=1258
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Cucullanus Infestation. Parasitic infestations (protozoa, worms, etc.)
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Arthur, J.R. and S. Lumanlan-Mayo 1997 Checklist of the parasites of fishes of the Philippines. FAO Fish. Tech. Pap. 369, 102 p. FAO, Rome. (Ref. 26129)
http://www.fishbase.org/references/FBRefSummary.php?id=26129&speccode=1258
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Evolution and Systematics
Evolution
Classification
In Pentapodidae in <130>
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Anon. (1996). FishBase 96 [CD-ROM]. ICLARM: Los Baños, Philippines. 1 cd-rom pp.
http://www.marinespecies.org/aphia.php?p=sourcedetails&id=5909
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Molecular Biology and Genetics
Molecular Biology
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
No available public DNA sequences.
Download FASTA File
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Statistics of barcoding coverage: Gymnocranius griseus
Barcode of Life Data Systems (BOLDS) Stats
Public Records: 6
Specimens with Barcodes: 10
Species With Barcodes: 1
Public Records: 6
Specimens with Barcodes: 10
Species With Barcodes: 1
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Conservation
Threats
Not Evaluated
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IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
http://www.fishbase.org/references/FBRefSummary.php?id=57073
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Relevance to Humans and Ecosystems
Benefits
Importance
fisheries: commercial; gamefish: yes
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Coppola, S.R., W. Fischer, L. Garibaldi, N. Scialabba and K.E. Carpenter 1994 SPECIESDAB: Global species database for fishery purposes. User's manual. FAO Computerized Information Series (Fisheries). No. 9. Rome, FAO. 103 p. (Ref. 171)
http://www.fishbase.org/references/FBRefSummary.php?id=171&speccode=2534
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van der Elst, R. 1993 A guide to the common sea fishes of southern Africa. (3rd Ed.). Struik Publishers, Cape Town. 398 p. (Ref. 12484)
http://www.fishbase.org/references/FBRefSummary.php?id=12484&speccode=80
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