Platax orbicularis
No common name
Collection Details
Specimens
Photos
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Records
Taxonomic Hierarchy
Actinopterygii (Ray-finned Fishes)
Perciformes (Perciformes, Also Called the Acanthopteri)
Ephippidae (Spadefishes)
Platax
Platax orbicularis
Description
This species account was compiled from
FishBase (Froese, R. and D. Pauly. Editors. 2025. FishBase. World Wide Web electronic publication. www.fishbase.org, version 04/2025.)
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Characters
Body shape: short and / or deep. The ocular band of adult specimens with a series of dark vermiculations (Ref. 1602). Adults (above 20 cm) yellowish silvery or dusky, dark bar through eye and another bar just behind head. Occasionally with a few small, scattered black spots on body. Median fins yellowish, with black margins posteriorly. Pelvic fins black. Small juveniles reddish brown, with irregular black spots and blotches and small, white (black-edged) ocelli on body. Small black spot at base of last 3 dorsal- and anal-fin rays. Caudal fin transparent except for base, which is reddish brown. Body orbicular and strongly compressed, its depth more than twice length of head and 0.9 to 1.4 times SL. Head length 3.4 to 3.8 times SL. Snout profile of large adults (above 40 cm total length) concave, with bony swelling between eyes. Interorbital width 38 to 48% head length. Jaws with bands of slender, flattened, tricuspid teeth, the middle cusp about twice length of lateral cusps. No teeth on palatines or vomer. Five pores on each side of lower jaw. Preopercle smooth. Opercle without spines (Ref 43039). Striking features: none.
Distribution
Indo-Pacific: Red Sea and East Africa and Persian Gulf (Ref. 68964) to the Tuamoto Islands, north to southern Japan, south to northern Australia and New Caledonia. Recorded off the coast of Florida in the Western Central Atlantic (Ref. 51238).
Habitat Associations
Brackish, marine. reef-associated. depth range 0-30 m. Found in: estuaries, mangroves, coral reefs, seagrass beds.
Biology
Live in shallow protected coastal waters to deep, somewhat silty habitats. Often with deep shipwrecks (Ref. 48637). Adults are found singly or in small groups and occasionally in large schools in some areas. Juveniles occur singly or in small groups among mangroves and inner sheltered lagoons while adults move out to open waters over sandy areas of deep lagoons, channels, and seaward reefs to a depth of at least 30 m. Feed on algae, invertebrates and small fishes (Ref. 89972).
Max length: 60.0 cm TL.
Reproductive mode: dioecism; fertilization: external; nonguarders (open water/substratum egg scatterers); parental care: none.
IUCN Red List Status: Least Concern (LC), assessed 2018-10-12. Resilience: Medium (Preliminary K or Fecundity.).
Commercial or Environmental Importance
Fisheries: minor commercial; aquaculture: commercial; aquarium: commercial.
References
Myers, R.F. (1991) Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p.
Randall, J.E., G.R. Allen and R.C. Steene (1990) Fishes of the Great Barrier Reef and Coral Sea. University of Hawaii Press, Honolulu, Hawaii. 506 p.
Bouhlel, M. (1988) Poissons de Djibouti. Placerville (California, USA): RDA International, Inc. 416 p.
Thollot, P. (1996) Les poissons de mangrove du lagon sud-ouest de Nouvelle-Calédonie. ORSTOM Éditions, Paris.
Fricke, R. (1999) Fishes of the Mascarene Islands (Réunion, Mauritius, Rodriguez): an annotated checklist, with descriptions of new species. Koeltz Scientific Books, Koenigstein, Theses Zoologicae, Vol. 31:759 p.
Heemstra, P.C. (2001) Ephippidae. Spadefishes (batfishes). p. 3611-3622. In K.E. Carpenter and V. Niem (eds.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Vol. 6. Bony fishes part 4 (Labridae to Latimeriidae), estuarine crocodiles. FAO, Rome.
Patzner, R.A. (2008) Reproductive strategies of fish. pp. 311-350. In Rocha, M.J., A. Arukwe and B.G. Kapoor (eds). Fish reproduction: cytology, biology and ecology. Science Publisher, Inc. Oxford. 631 p.
Coleman, R., J.M. Copus, D.M. Coffey, R.K. Whitton and B.W. Bowen (2018) Shifting reef fish assemblages along a depth gradient in Pohnpei, Micronesia. PeerJ, 6: e4650. DOI: 10.7717/peerj.4650
Comments On Platax orbicularis