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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/).
						
					
				
					Environment: milieu / climate zone / distribuzione batimetrica / distribution range					
						Ecologia					
				
				
				
					; acqua dolce benthopelagico; pH range: 6.0 - 8.0; dH range: 5 - 19. Tropical; 24°C - 27°C (Ref. 1672)				
				 
			
			
			
				
				
				
					Asia:  Mekong and Chao Phraya basins.
				
				
			
			
				
					Size / Peso / Age
				
				
				
					Maturità: Lm ?  range ? - ? cm
 Max length : 7.0 cm TL maschio/sesso non determinato; (Ref. 6398)				
				 
			
			
						
				
				
				
					Spine anali: 4 - 5; Raggi anali molli: 22 - 26. Head length 4.0-4.5 times in SL; male with anal fin extending to end of caudal fin; stripes on body faint, adult male reddish brown with an iridescent blue or green spot on each scale; anal and caudal fins blue with red rays; female brown with 2 darker stripes (Ref. 43281).
Body shape (shape guide): fusiform / normal.				
				 
			
			
			
			
			
			
			
				Facultative air-breathing (Ref. 126274); Bubble nest builder (Ref. 4537).			
			 
			
			
			
				
					Life cycle and mating behavior					
					Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve				
				
				
				
				Builds bubble-nest.				
				
			
			 
				
				
				
					Kottelat, M., 2001. Fishes of Laos. WHT Publications Ltd., Colombo 5, Sri Lanka. 198 p. (Ref. 43281)
				
				 
			
			
			
							
					
						IUCN Red List Status   (Ref. 130435: Version 2025-1)
					
					
				 
					
			
			
			
			
			
			
			
				
					Threat to humans  
				
				
				
					  Harmless				
				
			 
			
			
			
			
				
					Human uses  				
				
				
					Pesca: commerciale; Acquario: Commerciale				
				
				
			
			
						
			
			
			
				
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					Estimates based on models				
				
				
				
				
				
					
					Phylogenetic diversity index  (Fonte Biblio. 
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).
					
					Trophic level  (Fonte Biblio. 
69278):  3.2   ±0.4 se; based on size and trophs of closest relatives					
											
				
				
										
						Resilienza  (Fonte Biblio. 
120179):  Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).					
											
				
									
					Fishing Vulnerability  (Ref. 
59153):  Low vulnerability (10 of 100). 
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