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Characiformes (Characins) >
Alestidae (African tetras)
Etymology: Bathyaethiops: Greek, bathys = deep + Greek, Aethiopia, an African country (Ref. 45335); baka: Named after the Baka people, the native hunter-gatherer tribe in southeastern Cameroon, where the species was found; a noun in aposition (Ref. 110423).
Eponymy: This species is named after the Baka people, a native hunter-gatherer tribe in Cameroon. (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
экология
; пресноводный донно-пелагический; pH range: 7.1 - 7.1. Tropical; 28°C - ? (Ref. 110423)
Africa: Ngoko River (Sangha drainage, middle Congo River basin) in Cameroon (Ref. 110423).
Size / Вес / Возраст
Maturity: Lm ? range ? - ? cm
Max length : 2.4 cm SL самец/пол неопределен; (Ref. 110423)
Краткое описание
определительные ключи | морфология | морфометрия
колючие лучи спинного плавника (общее число) : 0; членистые (мягкие) лучи спинного плавника (общее число) : 10 - 11; колючие лучи анального плавника: 0; членистые (мягкие) лучи анального плавника: 21 - 24; позвонки: 35 - 37. Diagnosis: Bathyaethiops baka is distinguished from all congeners by an incomplete squamation with the scale cover variably reduced to no pre-dorsal scales, usually no scales on caudal peduncle, and usually a scale-free patch on middle flank at about level of pelvic-fin origin; furthermore distinguished by a unique colour pattern, i.e., a combination of a humeral spot of about pupil-size and the absence of dark vertical bars along midlateral flanks (Ref. 110423). It is difficult to distinguish from juvenile Bathyaethiops caudomaculatus, from which it differs by the usually absence of unicuspid teeth in the second row of lower jaws vs. presence, and usually the absent or rudimentary supraneural between two neural spines directly in front of the first dorsal fin pterygiophore vs. well developed (Ref. 110423).
Found in the main river channel of Ngoko River, usually in or close to riparian vegetation over a substrate of fine particles and organic material (Ref. 110423).
Life cycle and mating behavior
половая зрелость | размножение | нерест | икра | Fecundity | личинки
Moritz, T. and U.K. Schliewen, 2016. Description of two new Bathyaethiops species (Teleostei: Alestidae) from the Congo basin. Zootaxa 4117(4):476-490. (Ref. 110423)
Статус Красного Списка МСОП (Ref. 130435: Version 2024-2)
Угроза для людей
Harmless
Использование человеком
дополнительная информация
инструменты
Специальные отчеты
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.0 ±0.3 se; based on size and trophs of closest relatives
устойчивость к внешним воздействиям (Ref.
120179): высокий, минимальное время удвоения популяции до 15 месяцев (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
