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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/).
Eponymy: Tussy Nagi is the wife of Austrain aquarist Peter Nagy. Together they brought the first examples of this species to Europe, collecting them in Malaysia (1979). (Also see Nagy) (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ekologi
; sötvatten bentopelagisk; pH range: 4.0 - 5.0. Tropical; 21°C - 24°C (Ref. 2059)
Asia: Malaysia (known from the type locality south of Pekan, Pahang).
Size / Vikt / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.7 cm SL hane/ej könsbestämd; (Ref. 56613)
Facultative air-breathing (Ref. 126274); Inhabits peat swamp forests (Ref. 84801).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
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
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 (0.00377 - 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).
Trofisk nivå (Ref.
69278): 3.1 ±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).