Platax batavianus  Cuvier, 1831

Humpback batfish
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Platax batavianus   AquaMaps   Data sources: GBIF OBIS
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Image of Platax batavianus (Humpback batfish)
Platax batavianus
Picture by Randall, J.E.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Ephippidae (Spadefishes, batfishes and scats)
Etymology: Platax: Greek, platys = flat (Ref. 45335).   More on author: Cuvier.

Environment / Climate / Range Ecology

Marine; reef-associated; depth range 5 - 40 m (Ref. 90102).   Tropical

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 65.0 cm SL male/unsexed; (Ref. 48637)

Short description Morphology | Morphometrics

Dorsal spines (total): 6 - 7; Dorsal soft rays (total): 28-31; Anal spines: 3; Anal soft rays: 19 - 23. Adults (above 40 cm) silvery, with dark bar through eye and another (faint) bar just behind head. Fins dusky. Small juveniles black, vertical white lines on body and fins. Subadults brown, with black bar from nape, over eye to chest and another black bar from dorsal-fin origin, over pectoral fins to pelvic fins, pectoral and pelvic fins dark brown or black. Body orbicular and strongly compressed, its depth more than twice length of head and 1.1 to 1.9 times in SL. Snout profile of large adults (above 40 cm) concave, with prominent bony swelling between eyes. Jaws with bands of slender, flattened, tricuspid teeth, the middle cusp 3 to 4 times longer than lateral cusps. Vomer with a band of strong teeth, no teeth on palatines. Five pores on each side of lower jaw. Preopercle smooth. Opercle without spines (Ref 43039).

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Indo-West Pacific: Madagascar to Indonesia and Australia (Ref. 2334, 3131).

Biology     Glossary (e.g. epibenthic)

Inhabits continental reefs (Ref. 9710). Adults usually moderately deep on open substrates with sparse reef or coral heads. A solitary species, but occasionally in pairs or small groups. Small juveniles also in deep water and the zebra-pattern serves well as camouflage when sheltering with crinoids (Ref. 48637). Juveniles in shore waters; adults in deeper water.

Main reference Upload your references | References | Coordinator | Collaborators

Sainsbury, K.J., P.J. Kailola and G.G. Leyland, 1985. Continental shelf fishes of the northern and north-western Australia. CSIRO Division of Fisheries Research; Clouston & Hall and Peter Pownall Fisheries Information Service, Canberra, Australia. 375 p. (Ref. 3131)

IUCN Red List Status (Ref. 90363)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Aquarium: commercial
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Internet sources

BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | National databases | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5313   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02570 (0.01131 - 0.05844), b=3.01 (2.81 - 3.21), based on LWR estimates for this Subfamily-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.5   ±0.37 se; Based on food items.
Resilience (Ref. 69278):  .
Vulnerability (Ref. 59153):  Moderate to high vulnerability (51 of 100) .
Price category (Ref. 80766):   Low.