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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.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce benthopélagique. Tropical
Asia: Lower Kapaus basin in Kalimantan Barat, Indonesia.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 4.5 cm SL mâle / non sexé; (Ref. 57022)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
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).
Body shape (shape guide): fusiform / normal.
Facultative air-breathing (Ref. 126274)
Cycle de vie et comportement reproducteur
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: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 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). |
Niveau trophique (Réf. 69278) |
3.2 ±0.4 se; based on size and trophs of closest relatives |
Résilience (Réf. 120179) |
Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.). |
Vulnérabilité de la pêche (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |