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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/).
More on authors: Tan & Kottelat.
ສະພາບແວດລ້ອມ: ສະພາບແວດລ້ອມ / ເຂດດິນຟ້າອາກາດ / ລະດັບຄວາມເລິກ / ຂອບເຂດການແຈກຢາຍ
ນິເວດວິທະຍາ
; ນ້ຳຈືດ ກ່ຽວກັບ (ຢູ່)ເທິງຊັ້ນພື້ນດິນໃນທະເລເປີດ. Tropical
Asia: central Sumatra, Indonesia.
ຂະໜາດ / ນ້ຳໜັກ / ອາຍຸ
ການຈະເລີນເຕັມໄວ: Lm ?  range ? - ? cm
Max length : 3.5 cm SL ຕົວຜູ້/ບໍ່ມີເພດ; (Ref. 38481)
ຄີ (ໜາມ)ແຂງຢູ່ຫຼັງປາ (ທັງໝົດ) : 1 - 2; ຄີຫຼັງຂອງປາ (ຄີອ່ອນ) (ທັງໝົດ) : 7 - 8; ຄີ(ໜາມ) ແຂງຢູ່ຄີກົ້ນປາ
ກຸ່ມປາກະດູກແຂງ
ຄວາມຖີ່ຂອງກຸ່ມຖ່າຍທອດພັນ
ປາທີ່ມີການເຄື່ອນຍ້າຍຈາກທະເລໄປຫານ້ຳຈືດ ແລະນ້ຳຈືດຫາທະເລ
ປາທີ່ມີການເຄື່ອນຍ້າຍຈາກທະເລແລະໄປໄຂ່ຢູ່ນ້ຳຈືດ
ຄີກົ້ນຂອງປາ
ສັດທີ່ມີກະດູກສັນຫັຼງ
ການຖ່າຍທອດທາງກຳມະພັນຈາກພໍ່ແມ່ຫາລູກ: 2; ຄີກົ້ນຂອງປາ: 19 - 21. This species is closely related to Betta picta from Java where it can be distinguished in the following characters: fewer dorsal fin rays (mode 8 vs. 9); fewer lateral scales (mode 27 vs. 28); dorsal fin origin above 11-12th lateral scale (vs. 12-14th); anal fin origin below modal 6th lateral scale (vs. 7th); fewer predorsal scales (mode 19 vs. 20); slightly greater anal-fin base length (46.5-50.3% SL vs. 42.6-48.4); anal and caudal fins with reddish distal band in live male (vs. bluish); iridescent greenish-blue opercle scales (vs. yellow-gold); in preserved specimens, male with distinct dorsal transverse bars (vs. faint); male with distinct dark anal distal margin wide (vs. narrow); male without elongated median caudal fin rays (vs. presence); female with distinct caudal transverse bars (vs. very faint or absent); dorsal head view narrow (vs. broad); thick preorbital black stripe (vs. narrow); and the distance between posterior part of anal fin to lower part of caudal narrow (vs. wide) (Ref. 56386).
Body shape (shape guide): fusiform / normal.
Facultative air-breathing (Ref. 126274); Typically found among submerged bank vegetation, in near stagnant waters, with pH 4.7-6.8. Latin word falx means scythe, alluding to the continuous curved shape of the broad anal and caudal distal margins of a male in display. Caudal fin rounded.
ວົງຈອນຊີວິດ ແລະພຶດຕິກໍາການຫາຄູ່
ການຈະເລີນເຕັມໄວ | ການສືບພັນ | ການວາງໄຂ່ | ໄຂ່ | ຄວາມດົກຂອງໄຂ່ປາ | ຕົວອ່ອນ
Tan, H.H. and M. Kottelat, 1998. Redescription of Betta picta (Teleostei: Osphronemidae) and description of B. falx sp. n. from central Sumatra. Rev. Suisse Zool. 105(3):557-568. (Ref. 38481)
ສະຖານະພາບບັນຊີແດງຂອງ IUCN (Ref. 130435: Version 2025-2)
ໄພຂົ່ມຂູ່ຕໍ່ມະນຸດ
Harmless
ການນໍາໃຊ້ຂອງມະນຸດ
ເຄື່ອງມື
ບົດລາຍງານພິເສດ
ດາວໂຫລດ XML
ແຫຼ່ງອີນເຕີເນັດ
ການຄາດຄະເນໂດຍອີງໃສ່ແບບຈໍາລອງ
ດັດຊະນີຄວາມຫຼາກຫຼາຍທາງຊີວະພາບ (ເອກະສານອ້າງອີງ
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).
ຊັ້ນເຂດຮ້ອນ (ເອກະສານອ້າງອີງ
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
ຄວາມຢືດຢຸ່ນ (ເອກະສານອ້າງອີງ
120179): ສູງ, ປະຊາກອນຕຳ່ສຸດທີ່ໃຊ້ເວລາສອງໜ້ອຍກວ່າ 15 ເດືອນ (Preliminary K or Fecundity.).
ຄວາມສ່ຽງຕໍ່ການຫາປາ (Ref.
59153): Low vulnerability (10 of 100).
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