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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/)..
Environment: milieu / climate zone / depth range / distribution range
Ecologie
; zoet water benthopelagisch; diepte 1 - ? m (Ref. 12293). Tropical
Asia: Sabah, Borneo, East Malaysia.
Grootte / Gewicht / Leeftijd
Maturity: Lm ? range ? - ? cm
Max length : 5.1 cm SL mannelijk / geslacht onbekend; (Ref. 12293); 5.6 cm SL (female)
Korte beschrijving
Morfologie | Morfometrie
Dorsale stekels (totaal): 1; Dorsale zachte stralen (totaal): 7-9; Anale stekels 2; Anale zachte stralen: 24 - 28; Wervels: 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).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Assumed to be the same as in Betta picta, i.e., the male is carying the aggs in his mouth for about 10 days.
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)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gevaar voor de mens
Harmless
Gebruik door de mens
Meer informatie
Leeftijd/GrootteGroeiLengte-gewichtLengte-lengteLengtefrequentiesMorfometrieMorfologieLarvenLarvale populatiedynamiekRekruteringAbundantieBRUVS
ReferentiesAquacultuurAquacultuurprofielKweeklijnenGeneticaElectrophoresesErfelijkheidZiektesVerwerkingNutrientsMassaconversie
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Estimates based on models
Fylogenetische diversiteitsindex (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).
Trofisch niveau (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref.
120179): Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
