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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/).
Eponymy: Dietrich Schaller is a German aquarist and importer of tropical fish. [...] (Ref. 128868), visit book page.
More on authors: Kottelat & Ng.
Environment: milieu / climate zone / εύρος βάθους / distribution range
Οικολογία
; Γλυκού νερού βενθοπελαγικό. Tropical
Asia: presently known only from Banka, Indonesia.
Μέγεθος / Βάρος / Age
Γεννητική Ωρίμανση: Lm ? range ? - ? cm
Max length : 4.5 cm SL αρσενικό/απροσδιόριστο; (Ref. 12803)
Short description
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Ραχιαίες άκανθες (συνολικά) : 2; Μαλακές ραχιαίες ακτίνες (συνολικά) : 8 - 9; Εδρικές άκανθες: 2 - 4; Μαλακές εδρικές ακτίνες: 23 - 25. Distinguished from other members from Sumatra, Indonesia in the following characters: more anal fin rays (27 vs. 23-25); more dorsal fin rays than Betta cracens and Betta fusca (10-11 vs. 8-9); more subdorsal scales than Betta cracens and B. fusca (6 1/2-7 vs. 5 1/2-6); more lateral scales than B. fusca (31 vs. 29); fewer lateral scales than Betta cracens (31 vs. 32-33); fewer predorsal scales than Betta cracens, Betta fusca and Betta raja (17-19 vs. 20-24); greater head length than Betta pugnax, Betta cracens and Betta fusca (35-.5-36.5% SL vs. 27.5-35.2); smaller predorsal length than Betta fusca (62.7-66.3% SL vs. 68.5-70.2); greater preanal length than Betta cracens (47.8-50.9% SL vs. 42.0-46.1); greater body depth than Betta cracens (26.7-27.6% SL vs. 21.2-24.2); greater dorsal fin base length than Betta cracens (12.4-13.9% SL vs. 10.5-11.6); smaller anal fin base length than Betta cracens (50.4-52.0% SL vs. 53.4-55.7); greater orbital diameter than Betta cracens and Betta fusca (61-76% postorbital length vs. 47-58) (Ref. 56386).
Body shape (shape guide): fusiform / normal.
Facultative air-breathing (Ref. 126274); Found in forest swamp, peat swamp and hill stream.
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
Kottelat, M. and P.K.L. Ng, 1994. Diagnoses of five new species of fighting fishes from Banka and Borneo (Teleostei: Belontiidae). Ichthyol. Explor. Freshwat. 5(1):65-78. (Ref. 12803)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Εργαλεία
Special reports
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Διαδικτυακές πηγές
Estimates based on models
Phylogenetic diversity index (Αναφ.
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).
Τροφικό Επίπεδο (Αναφ.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Ελαστικότητα (Αναφ.
120179): Υψηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού < 15 μήνες (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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