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/); andrei: Name 'andrei' in honor of Andre Chandra, an intrepid fish collector and enthusiast who assisted the author in procuring specimens and information.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
Asia: Indonesia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.1 cm SL male/unsexed; (Ref. 137640)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 1; Dorsal soft rays (total): 8; Anal spines: 1; Anal soft rays: 29; Vertebrae: 33. This species is distinguished by the following set of characters: black lower jaw, continuous with large black pitcher-shaped mark on throat, ending with a protrusion on buccal membrane; opercle uniform brown with dark brown mottling along posterior margin, operculum without lower distal margin black; faint black transverse bars on the dorsal and caudal fin interradial membranes; dark distal border on anal fin absent; 35 lateral scales; lateral scale 18 below the dorsal-fin origin, lateral scale 6 above the anal-fin origin; predorsal scales 22; postdorsal scales 11 (Ref. 137640).
Body shape (shape guide): fusiform / normal; Cross section: oval.
Facultative air-breathing
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Tan. T.H., 2023. A new species of black water fighting fish from Singkep Island (Teleostei:
Osphronemidae). Raffles Bulletin of Zoology 71:491-495. (Ref. 137640)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
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