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/).; dennisyongi: Named for Dennis Yong Ghong Chong, a distinguished and knowledgeable naturalist well experienced in many facets of tropical Southeast Asian fauna and flora with an avid interest in labyrinth fi shes. He has accompanied the author on many trips and shared many interesting stories, tips and gastronomic delights..
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
Asia: Sumatra in Indonesia, from Meulaboh to lowland hill streams before Singkil.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 3.5 cm SL male/unsexed; (Ref. 93059)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 1; Dorsal soft rays (total): 8; Anal spines: 2 - 3; Anal soft rays: 22 - 24; Vertebrae: 29 - 30. Differs from Betta rubra bypossessing the following characters: a continuous black postorbital stripe extending up to opercle edge (vs. interrupted stripe); broad suborbital stripe below eye forming a triangular black mark (4-5 scale rows wide, vs. 2-3); body coloration less intense with wider interspaces between the black body bars; fewer anal-fin n rays (mode 25, vs. 27); greater number of subdorsal scales (6-7 vs. 5-5 ½); greater number of lateral scales (mode 31, vs. 30); greater number of vertebrae (mode 30, vs. 29); longer dorsal-fin base length (13.0-18.4, vs. 11.0-13.4% SL); and smaller maximum size (35.4 vs. 42.1 mm SL) (Ref. 93059).
Facultative air-breathing (Ref. 126274); Occurs in lowland hillstream and acid water swamp habitats. Found in clear to brown-water habitats, from secondary forest to plantation and farmland environments. Syntopic with Osteochilus jeruk, Rasbora jacobsoni, Rasbora kluetensis (Cyprinidae); Nemacheilus tuberigum (Nemacheilidae); Mystus punctifer (Bagridae); and Ompok brevirictus, Kryptopterus piperatus (Siluridae) (Ref. 93059).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae
Tan, H.H., 2013. The identity of Betta rubra (Teleostei: Osphronemidae) revisited, with the description of a new species from Sumatra, Indonesia. Raffles Bull. Zool. 61(1):323-330. (Ref. 93059)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Tools
Special reports
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Internet sources
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).
Trophic level (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
