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Characiformes (Characins) >
Hepsetidae (African pikes)
Etymology: Hepsetus: Greek, epsetas, -e, -on = boiled, but there is the following sentence: "oí epsetoi" = certain fishes, and also could be related to "psetta" = grouper (Ref. 45335); odoe: The specific name refers to the local names in the Adangme language of Hepsetus specimens in Ghana: 'Akawo nyagbe', which means 'dog-like teeth' and 'akawo' which means 'attacker' or 'predator' (Ref. 88135).
More on author: Bloch.
Environment: milieu / climate zone / depth range / distribution range
экология
; пресноводный демерсальный; pH range: 6.0 - 7.5; dH range: ? - 18; мигрирует в реке (Ref. 51243). Tropical; 26°C - 28°C (Ref. 2060)
Africa: easternmost part of West Africa, from the Sassandra River, Ivory Coast, in the west to the Shari River, Central African Republic, in the east; and southwards up to the Kribi River in Cameroon (Ref. 88135). Reports from outside this area refer to other species of Hepsetus (Ref. 88135, 93279, 93907, 108775).
Length at first maturity / Size / Вес / Возраст
Maturity: Lm 14.0 range ? - ? cm
Max length : 44.2 cm SL самец/пол неопределен; (Ref. 83624)
колючие лучи спинного плавника (общее число): 0; членистые (мягкие) лучи спинного плавника (общее число): 9; колючие лучи анального плавника 0; членистые (мягкие) лучи анального плавника: 12; позвонки: 45 - 49. Diagnosis: This species is distinguished from all other Hepsetus species by the following unique combination of characters: number of lateral line scales low, 43–51; nostril-lower jaw distance short, 36.6–42.1% of head length; number of gill rakers high, 17–23; number of scales between dorsal fin and lateral line 7.5-9.5; number of scales between adipose fin and lateral line 4.5-6.5; head width broad, 32.8–42.3% of head length; and internasal distance high, 21.9–28.3% of head length (Ref. 88135).
This species seems to prefer upper river courses or small rivers where Hydrocynus species are absent or scarce (Ref. 81278).
Builds a free-floating bubblenest.
Decru, E., E. Vreven and J. Snoeks, 2012. A revision of the West African Hepsetus (Characiformes: Hepsetidae) with a description of Hepsetus akawo sp. nov. and a redescription of Hepsetus odoe (Bloch, 1794). J. Nat. Hist. 46(1-2):1-23. (Ref. 88135)
Статус Красного Списка МСОП (Ref. 130435)
Угроза для людей
Harmless
Использование человеком
рыболовство: рыболовство как средство для существования; аквариум: коммерческий
дополнительная информация
ссылкиаквакультура (рыбоводство)особенности рыбоводствастепень растяжениягенетикаElectrophoresesнаследуемостьболезниобработкаNutrientsMass conversion
соавторыизображенияStamps, Coins Misc.звукиCiguateraскоростьтип плаванияжаберная областьOtolithsмозгзрение
инструменты
Специальные отчеты
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00550 (0.00411 - 0.00735), b=3.13 (3.05 - 3.21), in cm total length, based on LWR estimates for this species (Ref.
93245).
Trophic level (Ref.
69278): 4.1 ±0.71 se; based on food items.
Generation time: 0.8 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
устойчивость к внешним воздействиям (Ref.
120179): средний (среднего размера), минимальное время удвоения популяции 1.4-4.4 года (K=0.27-0.59; tmax=5; Fec < 10,000).
Fishing Vulnerability (Ref.
59153): Low vulnerability (21 of 100).
Nutrients (Ref.
124155): Calcium = 164 [63, 392] mg/100g; Iron = 2.04 [1.02, 4.59] mg/100g; Protein = 18.9 [16.8, 21.2] %; Omega3 = 0.362 [0.132, 0.962] g/100g; Selenium = 120 [47, 340] μg/100g; VitaminA = 14.6 [5.4, 40.0] μg/100g; Zinc = 1.47 [0.99, 2.21] mg/100g (wet weight);
