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Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Osphronemidae (Gouramies) > Macropodusinae
Etymology: Betta: Siamese local name of the fish "ikan bettah"; raja: Named from the Malay vernacular Raja, meaning king or prince; also from the Indonesian vernacular for this species Chupang Raja.

Environment / Climate / Range Ecology

Freshwater; benthopelagic. Tropical, preferred ?

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

Asia: Sumatra, Indonesia.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 6.4 cm SL male/unsexed; (Ref. 56386)

Short description Morphology | Morphometrics

Dorsal spines (total): 1 - 2; Dorsal soft rays (total): 7-10; Anal spines: 2; Anal soft rays: 23 - 26; Vertebrae: 28 - 30. Pelvic fin very long in mature males (15-23 anal fin rays at pelvic fin end, even exceeding anal-fin base in some specimens); anal fin and lower half of caudal fin with dark margins; anal fin rays 25-28 (mode 26); lateral scales 30-32 (mode 31); head length 33.9-37.4% SL; predorsal length 20.0-24.6% SL; preanal length 46.1-52.4% SL; and body length 62.8-70.7% SL (Ref. 56386).

Inhabits lowland swamp forests (Ref. 56386).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Tan, H.H. and P.K.L. Ng, 2005. The labyrinth fishes (Teleostei: Anabantoidei, Channoidei) of Sumatra, Indonesia. Raffles Bull. Zool. Supplement (13):115-138. (Ref. 56386)

IUCN Red List Status (Ref. 115185)

Not Evaluated

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Harmless

Human uses

Aquarium: commercial; bait: usually

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Internet sources

Betta raja Tan & Ng, 2005