Nigeria country information

Common names: Ijakere, Saganci, Usawu
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Widely distributed in Nigeria (Ref. 31256). Known from Ogun River (Ref. 2914), Oshun River (Ref. 81278, 88135), Niger River basin (Ref. 2914, 81278, 88135), including Benue River (Ref. 2914, 81278, 88135) and Lake Kainji (Ref. 3799, 13861), and Cross River (Ref. 2914, 52861, 81278, 88135).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ni.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Decru, E., E. Vreven and J. Snoeks, 2012
National Database:

Common names from other countries

African pike, Angbagne, Ijakere, ... more

Classificatie / Names Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

> 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 Ecologie

; zoet water demersaal; pH range: 6.0 - 7.5; dH range: ? - 18; potamodroom (Ref. 51243). Tropical; 26°C - 28°C (Ref. 2060)

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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).

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturity: L_m 14.0 range ? - ? cm
Max length : 44.2 cm SL mannelijk / geslacht onbekend; (Ref. 83624)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 0; Dorsale zachte stralen (totaal): 9; Anale stekels 0; Anale zachte stralen: 12; Wervels: 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).

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

Builds a free-floating bubblenest.

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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)

Status op de Rode Lijst van het IUCN (Ref. 130435)

Niet bedreigd (LC) ; Date assessed: 15 May 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

Harmless

Gebruik door de mens

Visserij: visserij voor eigen gebruik; Aquarium: Commercieel

FAO(Aquacultuur: productie; visserij: productie; publication : search) | FishSource |

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Estimates based on models

Fylogenetische diversiteitsindex (Ref. 82804): PD₅₀ = 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).

Trofisch niveau (Ref. 69278): 4.1 ±0.71 se; based on food items.

Weerstandsvermogen (Ref. 120179): Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (K=0.27-0.59; tmax=5; Fec < 10,000).

Fishing Vulnerability (Ref. 59153): Low vulnerability (21 of 100).

Prijsklasse (Ref. 80766): Unknown.

Hepsetus odoe (Bloch, 1794)