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/).
More on author: Herre.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic; pH range: 5.2 - 7.0; dH range: ? - 10. Tropical; 21°C - 27°C (Ref. 13614)
Asia: Borneo.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 4.9 cm SL male/unsexed; (Ref. 56613)
Dorsal spines (total): 0 - 2; Dorsal soft rays (total): 8 - 9; Anal spines: 0 - 3; Anal soft rays: 27; Vertebrae: 30 - 31. A member of the Betta akarensis group distinguished from other members by possessing the following combination of characters: opercle with interrupted second postorbital stripe; eye color orange when alive; anal-fin rays 27-30; subdorsal scales 6-7; lateral scales 29-30; predorsal scales 21-24; postdorsal scales 10-12; preanal length 48.5-52.6% SL ; head length 32.6-37.5% SL; length of anal-fin base 47.8-55.4% SL (Ref. 56613).
Facultative air-breathing (Ref. 126274); Found in forest streams with moderate current, very shallow water among plant roots and submerged leaf litter along the banks. Also occurs in slow flowing black water streams among submerged stream bank vegetation and submerged leaf litter (Ref. 56613). An oral brooder (Ref. 56613).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Tan, H.H. and P.K.L. Ng, 2005. The fighting fishes (Teleostei: Osphronemidae: Genus Betta) of Singapore, Malaysia and Brunei. Raffles Bull. Zool. Supplement (13):43-99. (Ref. 56613)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Tools
Special reports
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00377 - 0.02651), b=2.97 (2.74 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
