Scleropages formosus (Müller & Schlegel, 1840)
Asian bonytongue
photo by Tursinah, N.

Family:  Osteoglossidae (Arowanas)
Max. size:  90 cm TL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  Asia: Southern Myanmar to Malay Peninsula and Indonesia, eastern Thailand to Cardamon Range.
Diagnosis:  With 1 pair of barbels; scales large.
Biology:  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: Endangered (EN); Date assessed: 03 June 2019 (A2cd+4cd) Ref. (130435)
Threat to humans:  harmless


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