Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
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/); mulyadii: Name 'mulyadii' in honor of Tjoa Hong Tjai who discovered the species.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
Asia: Indonesia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 2.8 cm SL male/unsexed; (Ref. 137539)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 8 - 10; Anal soft rays: 27 - 29. This species is distinguished by the following set of characters: dorsal-fin rays (8*-10) and subdorsal scales (5*-6); dorsal-fin base (9.89-15.1% SL, mean 12.5%); male with reddish body; absence of green iridescent mid-lateral body patch; unpaired fins red without significant marks (dorsal and caudal fins with bright bluish margins) (Ref. 137539).
Body shape (shape guide): fusiform / normal; Cross section: oval.
Facultative air-breathing
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Ding, J., W. Lei, H. Haryono, W. Shi and W. Zhang, 2025. Phylogenetic analysis of Betta coccina complex (Teleostei, Osphronemidae) from Peninsular Malaysia and Sumatra Island with descriptions of two new species. ZooKeys 1238:161-181. (Ref. 137539)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
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