Scleropages formosus (Müller & Schlegel, 1844)

Asian bonytongue

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Actinopterygii \| Osteoglossiformes \| Osteoglossidae
Synonyms	Osteoglossum formosum, ... more
Common names	... more

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Main reference

Kottelat, M., A.J. Whitten, S.N. Kartikasari and S. Wirjoatmodjo. 1993. (Ref. 7050)
Other references | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 90.0 cm TL male/unsexed; (Ref. 6398)

Length at first maturity

L_m ?, range 30 - 60 cm

Environment

Benthopelagic; freshwater

Climate / Range

Tropical; 24°C - 30°C (Ref. 2060)

Asia: Southern Myanmar to Malay Peninsula and Indonesia, eastern Thailand to Cardamon Range. International trade banned (CITES I, since 1.7.75).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

With 1 pair of barbels; scales large.

Occurs in tannin stained blackwater streams (Ref. 12693). Found in forest covered streams including peat adjacent areas. Take around three months for free swimming fries (Ref. 57235). Young individuals feed on insects at the water surface, adults take fishes (Ref. 12693, 57235) and smaller vertebrates (Ref. 56749). A mouth brooder, young about 6 cm at birth (Ref. 7050, 57235). Valued as an aquarium fish, its flesh commands a moderate price.


IUCN Red List Status (Ref. 57073)	Threat to humans
Endangered (EN) (A1cd+2cd)	Harmless

Human uses
Fisheries: commercial; aquarium: highly commercial


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

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Internet sources

Estimation of some characteristics with mathematical models

Phylogenetic diversity index (Ref. 82805)

PD₅₀ = 0.5195

Resilience (Ref. 69278)

Low, minimum population doubling time 4.5 - 14 years (tm = 3-4; Fec = 50 (in concrete tanks))


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Moderate to high vulnerability (47 of 100)	Not marketed/unknown

Entered by Cruz, Tess

Modified by Torres, Armi G.

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Page last modified by : celloran, 20 January 2010

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