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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/); pi: Specific epithet from the Greek letter (pi), as an allusion to the shape of its throat marking.
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
; agua dulce bentopelágico. Tropical
Asia: Thailand and Malaysia.
Tamaño / Peso / Edad
Madurez: Lm ?  range ? - ? cm
Max length : 9.0 cm SL macho / no sexado; (Ref. 57235)
Descripción breve
Claves de identificación | Morfología | Morfometría
Radios blandos dorsales (total) : 8 - 10; Radios blandos anales: 30 - 32; Vértebra: 31 - 33. Differs from other members of the B. waseri group by having the unique suite of characters: a pi-shaped black pattern on the throat; opercle usually with scales, without green scales; lower margin of opercle black, black spots on opercle; absence of dorsal and caudal-fin transverse bars; broad and distinct dark blue anal margin; predorsal scales 24-25; subdorsal scales 5 1/2-6 (mode 6); postdorsal scales 10-12 (mode 11); lateral scales 32-33 (mode 33); dorsal-fin rays 8-10 (mode 9); anal-fin rays 30-32 (mode 31); head length 32.3-34.4 % SL; body depth 26.4-29.7% SL (Ref. 56613).
Body shape (shape guide): fusiform / normal.
Facultative air-breathing (Ref. 126274); Primarily found in well shaded peat forest blackwater swamps and creeks which drained out such swamps; the beds are usually covered with dense leaf litter and lots of roots and plants. The free water area is often small, with pH of about 6.0 (Ref. 78499); very soft and deep (up to 1.3 m ) substrate (Ref. 57235).
Ciclo vital y comportamiento de apareamiento
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Tan, H.H., 1998. Description of two new species of the Betta waseri group (Teleostei: Osphronemidae). Ichthyol. Explor. Freshwat. 8(3):281-287. (Ref. 30225)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
Pesquerías: sin interés
Herramientas
Informes especiales
Descargar XML
Fuentes de Internet
Estimaciones basadas en modelos
Índice de diversidad filogenética (Referencia 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). |
Nivel trófico (Referencia 69278) |
3.3 ±0.4 se; based on size and trophs of closest relatives |
Resiliencia (Referencia 120179) |
Alto, población duplicada en un tiempo mínimo inferior a 15 meses (Preliminary K or Fecundity.). |
Vulnerabilidad pesquera (Ref. 59153) |
Low vulnerability (12 of 100). 🛈 |