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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 authors: Kottelat & Ng.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bentopelagisk. Tropical
Asia: Banka, Indonesia.
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 5.9 cm SL hane/ej könsbestämd; (Ref. 12803)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 0 - 1; Mjukstrålar i ryggfenan (totalt) : 8 - 9; Taggstrålar i analfenan: 2; Mjukstrålar i analfenan: 27 - 28. Differs from Betta hipposideros in the following characters: µ-shaped black throat mark (vs. horseshoe-shaped black mark); absence of both dorsal and caudal transverse bars (vs. presence); fewer subdorsal scales (mode 5-6 vs. 6 1/2). Distinguished from Betta renata in the following characters: µ-shaped black throat mark (vs. kidney-shaped); absence of both dorsal and caudal transverse bars (vs. presence); non-spotted opercle (vs. spotted opercle); opercle with yellow lower margin (vs. black margin); fewer subdorsal scales (mode 5-6 vs. 6 1/2). Can be differentiated from Betta spilotogena in the following characters: µ-shaped black throat mark (vs. black median spot); non-spotted opercles (vs. spotted opercle; and an opercle with yellow lower margin (vs. back margin) (Ref. 56386).
Body shape (shape guide): fusiform / normal.
Facultative air-breathing (Ref. 126274); Occurs in a secondary forest area in a pool among leaf litter.
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Kottelat, M. and P.K.L. Ng, 1994. Diagnoses of five new species of fighting fishes from Banka and Borneo (Teleostei: Belontiidae). Ichthyol. Explor. Freshwat. 5(1):65-78. (Ref. 12803)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00977 (0.00360 - 0.02649), b=2.97 (2.74 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trofisk nivå (Ref. 69278) |
3.2 ±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.). |
Sårbarhet i fisket (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |