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Teleostei (teleosts) > Anabantiformes (Gouramies, snakeheads) > Osphronemidae (Gouramies) > Macropodusinae
Etymology: Betta: Malay/Javanese origin. Bleeker (1850, 1858) indicates Ikan Wadder Bettah as the local name of Betta trifasciata Bleeker, 1849 (now Betta picta, Valenciennes, 1846) in the Ambarawa Javanese dialect. Ikan Wader is a common Javanese name for smaller freshwater fishes, especially cyprinids (already used in Old Javanese). See Blust, R. & Trussel, S. Austronesian Comparative Dictionary. Web Edition (https://www.trussel2.com/acd/)..

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; benthopelagic; depth range 1 - ? m (Ref. 12293). Tropical

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

Asia: Sabah, Borneo, East Malaysia.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 5.1 cm SL male/unsexed; (Ref. 12293); 5.6 cm SL (female)

Short description Morphology | Morphometrics

Dorsal spines (total): 1; Dorsal soft rays (total): 7-9; Anal spines: 2; Anal soft rays: 24 - 28; Vertebrae: 29 - 31. Can be differentiated from other members of the Betta akarensis group by possessing the following combination of characters: opercle with interrupted second postorbital stripe; eye color yellow when alive; anal-fin rays 26-30 (mode 28); subdorsal scales 5 1/2-7 (mode 6); lateral scales 30-31 9mode 31); predorsal scales 22-24 (mode 23); postdorsal scales 9-11 (mode 10); preanal length 42.6-45.7% SL; head length 31.4-33.3% SL; length of anal-fin base 54.8-58.5% SL (Ref. 56613).

Facultative air-breathing (Ref. 126274); Found in shallow (less than 0.5 m depth) peat swamps with substrate consisting mainly of detritus, leaves and peat (Ref. 12293). An oral brooder (Ref. 56613).

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

Assumed to be the same as in Betta picta, i.e., the male is carying the aggs in his mouth for about 10 days.

Main reference Upload your references | References | Coordinator | Collaborators

Ng, P.K.L., 1993. On a new species of Betta (Teleostei: Belontiidae) from peat swamps in Sabah, East Malaysia, Borneo. Ichthyol. Explor. Freshwat. 4(4):289-294. (Ref. 12293)

IUCN Red List Status (Ref. 126983)

Endangered (EN) (B1ab(iii)); Date assessed: 24 December 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

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Internet sources

Betta chini Ng, 1993