Классификация / Names
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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Tilapia: Bechuana, African native thiape = fish (Ref. 45335); pra: The species name pra refers both to the Akan word 'pra' (river) of the Kwa language family spoken in Ghana and to the River Pra, from which drainage the holotype was collected; it refers to the riverine distribution as compared to the lacustrine distribution of its apparent sister taxon Tilapia busumana; a noun in apposition (Ref. 84667).
Environment: milieu / climate zone / depth range / distribution range
экология
; пресноводный донно-пелагический. Tropical
Africa: Pra, Ankobra, Tano and Bia rivers in southwestern Ghana and southeastern Cote d'Ivoire (Ref. 84667).
Size / Вес / Возраст
Maturity: Lm ? range ? - ? cm
Max length : 12.7 cm SL самец/пол неопределен; (Ref. 84667)
Краткое описание
определительные ключи | морфология | морфометрия
колючие лучи спинного плавника (общее число) : 14 - 16; членистые (мягкие) лучи спинного плавника (общее число) : 11 - 12; колючие лучи анального плавника: 3; членистые (мягкие) лучи анального плавника: 8 - 10. Diagnosis: Tilapia pra is distinguished from all other Tilapia sensu lato except T. sparrmanii, T. ruweti, T. guinasana, T. baloni, T. brevimanus, T. busumana, Pelmatolapia mariae and Pelmatolapia cabrae, in having bicuspid pharyngeal teeth in the posterior two rows of lower pharyngeal jaw (Ref. 84667). It differs from T. baloni and T. ruweti in having more gill rakers on first ceratobranchial, lower, gill-arch, 10-12 vs. 6-9; from T. guinasana in having a higher number of upper lateral line scales, 18-22 vs. 14-17; and from T. sparrmanii in a combination of a higher number of upper lateral line scales, 18-22 vs. 14-19, a shorter anal fin base, 15.0-18.6% of standard length vs. 18.0-23.8%, and a lower number of vertical stripes, 6-7 vs. 8-9 (Ref. 84667). It further differs from Pelmatolapia mariae and P. cabrae in having fewer scales on the lower lateral line, 8-11 vs. 10-14, and not having spatulate shaped teeth in the outer row of both jaws; from T. brevimanus in having fewer gill rakers on the ceratobranchial gill-arch, 10-12 vs. 12-16, and not having spatulate shaped teeth in the outer row of both jaws; from T. busumana in possessing a longer last dorsal-spine, 16.2-21.3% of standard length vs. 11.6-14.9%, a shorter lower lip length, 8.0-10.7% of standard length vs. 9.6-13.9%, and a shorter lower jaw length, 9.9-13.6% of standard length vs. 10.5-15.2%; in addition, it differs from T. busumana in ground colouration: Tilapia pra possesses a light brown to greyish dorsum and a beige to yellow ventral area vs. a bluish-purple to blackish dorsum and darker on underside of head and body of T. busumana (Ref. 84667).
Found over sandy/muddy substrate of mediem-sized rivers (Ref. 84667).
Life cycle and mating behavior
Maturities | размножение | Spawnings | Egg(s) | Fecundities | личинки
Dunz, A.R. and U.K. Schliewen, 2010. Description of a new species of Tilapia Smith, 1840 (Teleostei: Cichlidae) from Ghana. Zootaxa 2548:1-21. (Ref. 84667)
Статус Красного Списка МСОП (Ref. 130435)
Угроза для людей
Harmless
Использование человеком
дополнительная информация
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Специальные отчеты
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5078 [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): 2.3 ±0.2 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).
