Classification / Names
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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/).; krataios: Name from a Greek word meaning strong, sturdy, referring to the body build; noun in apposition..
Environment: milieu / climate zone / depth range / distribution range
Écologie
; eau douce benthopélagique. Tropical
Asia: Lower Kapaus basin in Kalimantan Barat, Indonesia.
Taille / Poids / Âge
Maturity: Lm ?  range ? - ? cm
Max length : 4.5 cm SL mâle / non sexé; (Ref. 57022)
Épines dorsales (Total): 1 - 2; Rayons mous dorsaux (Total): 6-8; Épines anales 2-3; Rayons mous anaux: 19 - 22; Vertèbres: 29 - 31. Distinguished from Betta dimidiata (the only other member of the B. dimidiata group) in having the following combination of characters: iridescent turquoise opercle scales when live ( vs. gold); yellowish-brown body when live (vs. reddish); yellowish fins when live (vs. reddish); rounded caudal fin (vs. lanceolate); more lateral scales (30-32, vs. 29-30); more predorsal scales (20-21, vs. 17-18); deeper caudal peduncle (15.3-17.0% SL, vs. 11.8-14.5) (Ref. 57022).
Facultative air-breathing (Ref. 126274)
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Tan, H.H. and P.K.L. Ng, 2006. Six new species of fighting fish (Teleostei: Osphronemidae: Betta) from Borneo. Ichthyol. Explor. Freshwat. 17(2):97-114. (Ref. 57022)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
Menace pour l'homme
Harmless
Utilisations par l'homme
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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).
Niveau trophique (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Résilience (Ref.
120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).