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Characiformes (Characins) >
Alestidae (African tetras)
Eponymy: Sir Frederick John Jackson (1859–1929) was an English administrator and explorer, but also a naturalist and keen ornithologist. [...] (Ref. 128868), visit book page.
More on author: Boulenger.
ສະພາບແວດລ້ອມ: ສະພາບແວດລ້ອມ / ເຂດດິນຟ້າອາກາດ / ລະດັບຄວາມເລິກ / ຂອບເຂດການແຈກຢາຍ
ນິເວດວິທະຍາ
; ນ້ຳຈືດ ກ່ຽວກັບ (ຢູ່) ໄກ້ໜ້ານ້ຳໃນທະເລເປີດ; ລະດັບຄວາມເລິກ 0 - 20 m (Ref. 34290). Tropical
Africa: Lake Victoria (and at least some affluent streams and rivers), Lake Nabugabo, Malawa River, Victoria Nile (Ref. 34290, 104654) and Middle Akagera drainage (Ref. 46152).
ຂະໜາດ / ນ້ຳໜັກ / ອາຍຸ
ການຈະເລີນເຕັມໄວ: Lm ?  range ? - ? cm
Max length : 27.0 cm SL ຕົວຜູ້/ບໍ່ມີເພດ; (Ref. 34290); common length : 23.0 cm SL ຕົວຜູ້/ບໍ່ມີເພດ; (Ref. 34290)
ຄີ (ໜາມ)ແຂງຢູ່ຫຼັງປາ (ທັງໝົດ) : 0; ຄີຫຼັງຂອງປາ (ຄີອ່ອນ) (ທັງໝົດ) : 10; ຄີ(ໜາມ) ແຂງຢູ່ຄີກົ້ນປາ
ກຸ່ມປາກະດູກແຂງ
ຄວາມຖີ່ຂອງກຸ່ມຖ່າຍທອດພັນ
ປາທີ່ມີການເຄື່ອນຍ້າຍຈາກທະເລໄປຫານ້ຳຈືດ ແລະນ້ຳຈືດຫາທະເລ
ປາທີ່ມີການເຄື່ອນຍ້າຍຈາກທະເລແລະໄປໄຂ່ຢູ່ນ້ຳຈືດ
ຄີກົ້ນຂອງປາ
ສັດທີ່ມີກະດູກສັນຫັຼງ
ການຖ່າຍທອດທາງກຳມະພັນຈາກພໍ່ແມ່ຫາລູກ: 0; ຄີກົ້ນຂອງປາ: 18 - 19. Anal fin margin of females straight or very slightly concave; markedly convex in males (individual rays are stouter and coarser than those of females). Silver, bluish-grey to black-blue dorsally. Large black blotch on the caudal peduncle, with narrow extension on the caudal fin; round black spot behind the head. Dorsal fin grey, adipose dorsal fin orange. All fins grey in color; other specimens all yellowish (except for pectorals). Anal and pelvic fins of a faint orange tinge or grey with a faint yellowish sheen (Ref. 34290).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
In Lake Victoria confined to shallow coastal areas (Ref. 34290, 104654), in water less than 20 m deep (Ref. 12526, 34290). Omnivore, feeding on aquatic plants, surface insects and small fishes, and sometimes on molluscs (Ref. 4903, 12526, 104654). Known to run up rivers and streams in Lake Victoria during rainy season (Ref. 4903). Apparently rare since introduction of Lates (Ref. 4967).
ວົງຈອນຊີວິດ ແລະພຶດຕິກໍາການຫາຄູ່
ການຈະເລີນເຕັມໄວ | ການສືບພັນ | ການວາງໄຂ່ | ໄຂ່ | ຄວາມດົກຂອງໄຂ່ປາ | ຕົວອ່ອນ
van Oijen, M.J.P., 1995. Appendix I. Key to Lake Victoria fishes other than haplochromine cichlids. p. 209-300. In F. Witte and W.L.T. van Densen (eds.) Fish stocks and fisheries of Lake Victoria. A handbook for field observations. Samara Publishing Limited, Dyfed, Great Britain. (Ref. 34290)
ສະຖານະພາບບັນຊີແດງຂອງ IUCN (Ref. 130435: Version 2025-2 (Global))
ໄພຂົ່ມຂູ່ຕໍ່ມະນຸດ
Harmless
ການນໍາໃຊ້ຂອງມະນຸດ
ການປະມົງ: ທີ່ບໍ່ມີຄວາມສົນໃຈ
ເຄື່ອງມື
ບົດລາຍງານພິເສດ
ດາວໂຫລດ XML
ແຫຼ່ງອີນເຕີເນັດ
ການຄາດຄະເນໂດຍອີງໃສ່ແບບຈໍາລອງ
ດັດຊະນີຄວາມຫຼາກຫຼາຍທາງຊີວະພາບ (ເອກະສານອ້າງອີງ 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01072 (0.00489 - 0.02350), b=3.02 (2.84 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
ຊັ້ນເຂດຮ້ອນ (ເອກະສານອ້າງອີງ 69278) |
3.3 ±0.5 se; based on size and trophs of closest relatives |
ຄວາມຢືດຢຸ່ນ (ເອກະສານອ້າງອີງ 120179) |
ສູງ, ປະຊາກອນຕຳ່ສຸດທີ່ໃຊ້ເວລາສອງໜ້ອຍກວ່າ 15 ເດືອນ (Preliminary K or Fecundity.). |
ຄວາມສ່ຽງຕໍ່ການຫາປາ (Ref. 59153) |
Low to moderate vulnerability (30 of 100). 🛈 |