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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: Bleeker.
Environment: milieu / climate zone / depth range / distribution range
Ekologi
; sötvatten bentopelagisk; pH range: 4.5 - 7.5; dH range: ? - 1; djupintervall ? - 1 m (Ref. 81926). Tropical; 27°C - 30°C (Ref. 2060)
Asia: lower Barito basin in South Kalimantan and Kotawaringin, Katingan, Sampit, Mentaya and Kahayan basins in Central Kalimantan, Indonesian Borneo.
Size / Vikt / Age
Maturity: Lm ? range ? - ? cm
Max length : 8.2 cm SL hane/ej könsbestämd; (Ref. 81926)
Taggstrålar i ryggfenan (totalt) : 0 - 1; Mjukstrålar i ryggfenan (totalt) : 8 - 9; Taggstrålar i analfenan: 1 - 2; Mjukstrålar i analfenan: 27 - 29; Ryggkotor: 30 - 31. Can be distinguished from other species in possessing the following combination of characters: a thick-set body (body depth 30.5-33.7 % SL) with the anterior part of the body reminiscent of the taxon Anabas; head devoid of pattern except for a preorbital stripe that runs from the black lower lip to the eye, and continuous with a postorbital stripe to the posterior edge of the opercle; in living specimens, the opercle with faint gold iridescent scales; and some median caudal rays projecting beyond the fin margin (Ref. 81926).
Facultative air-breathing (Ref. 126274); Found in a murky stream, up to 1.2 m deep and pH 7.5. The stream water was sluggish and drained from cultivated area upstream (Ref. 81926). Seen only in local markets. Mouth brooder (Ref. 4537).
Life cycle and mating behavior
Maturities | Reproduktion | Spawnings | Egg(s) | Fecundities | Larver
Male mouth brooder.
Kottelat, M., A.J. Whitten, S.N. Kartikasari and S. Wirjoatmodjo, 1993. Freshwater fishes of Western Indonesia and Sulawesi. Periplus Editions, Hong Kong. 221 p. (Ref. 7050)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Fiskeri: mindre kommeriell; Akvarium: Kommersiell
Verktyg
Special reports
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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 (0.00376 - 0.02663), b=2.97 (2.75 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
