Classification / Names
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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/); hendra: Named for Hendra Tommy, (Kurnia Aquarium, Palangkaraya, Kalimantan Tengah, Borneo), who discovered and exported the species. Treated as a Latinised noun in apposition.
Eponymy: Hendra Tommy is the Indonesian owner-operator of Kurnia Aquarium and Pet Shop which collects, breeds and sells tropical fish domestically and abroad. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; acqua dolce benthopelagico; pH range: 4.0 - ?. Tropical; ? - 29°C (Ref. 93322)
Asia: Sungai Sebangau drainage in Kalimantan Tengah, Borneo, Indonesia.
Size / Peso / Age
Maturity: Lm ?  range ? - ? cm
Max length : 4.2 cm SL maschio/sesso non determinato; (Ref. 93322)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 1 - 2; Raggi dorsali molli (totale) : 9 - 12; Spine anali: 2 - 3; Raggi anali molli: 24 - 28. Belongs to the Betta coccina species group but can be distinguished from the remaining species of this clade by having bright, greenish-colored flanks and unpaired fins (vs. body blackish without iridescent scales, or greenish iridescent scales restricted to the lateral blotch or the central parts of the flanks). Diagnosed from its geographic neighbor species Betta uberis by having 10-12 dorsal-fin rays (vs. 14-17 in B. uberis) (Ref. 93322).
Facultative air-breathing (Ref. 126274); Found in peat swamps with depth of about 5 to 50 cm and with no water current. The water was shaded by trees and bushes. Collected among the aquatic and marsh plants. Forms bubble nest based on aquarium conditions (Ref. 93322).
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
A bubble-nester based on aquarium observations (Ref. 93322).
Schindler, I. and H. Linke, 2013. Betta hendra - a new species of fighting fish (Teleostei: Osphronemidae) from Kalimantan Tengah (Borneo, Indonesia). Vertebrate Zoology 63(1):35-40. (Ref. 93322)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Strumenti
Special reports
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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 (0.00377 - 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 (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Resilienza (Ref.
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).