>
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).
Eponymy: Georges Léopold Chrétien Frédéric Dagobert Baron Cuvier (1769–1832), better known by his pen name Georges Cuvier, was a French naturalist and one of the scientific giants of his age. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
; zoet water demersaal. Tropical
Africa: Quanza, Cunene, Okavango, upper Zambezi and Kafue River systems; in the Congo River basin present in the southernmost part of the Kasai basin and in the lower Luapula River (Ref. 93907).
Lengte bij maturiteit / Grootte / Gewicht / Leeftijd
Maturity: Lm 25.0 range ? - ? cm
Max length : 37.0 cm SL mannelijk / geslacht onbekend; (Ref. 30518); max. gerapporteerde leeftijd: 5 Jaren (Ref. 2750)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 0; Dorsale zachte stralen (totaal) : 9; Anale stekels: 0; Anale zachte stralen: 12. Diagnosis: Hepsetus cuvieri can be distinguished from Hepsetus odoe based on a lower total number of gill rakers on the first gill arch, being 8–13 versus 14–21; a generally higher number of scales between the dorsal fin and the lateral line, 10.5–11.5 versus 7.5–10.5; a typically higher number of scales between the adipose fin and the lateral line, 6.5–7.5 versus 4.5–6.5; and a unique colour pattern characterized by a mottled appearance of the dark brown blotches on the lateral surface of the body versus the presence of vertical brown stripes/bars in that region in Hepsetus odoe (Ref. 93907).
Prefers quiet, deep water, like channels and lagoons of large floodplains; juveniles and fry inhabit well-vegetated marginal habitats (Ref. 7248). Adults feed on fish, juveniles feed on small invertebrates and fish (Ref. 7248). Multiple spawner; breeds over the summer months; relatively short-lived, only 4-5 years; also caught with drawnets (Ref. 7248).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Builds a free-floating bubblenest.
Zengeya, T.A., E. Decru and E. Vreven, 2011. Revalidation of Hepsetus cuvieri (Castelnau, 1861) (Characiformes: Hepsetidae) from the Quanza, Zambezi and southern part of the Congo ichthyofaunal provinces. J. Nat. Hist. 45(27-28):1723-1744. (Ref. 93907)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2024-1)
Gevaar voor de mens
Harmless
Gebruik door de mens
Sportvis: ja
Tools
Speciale rapporten
Download XML
Internetbronnen
Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00501 (0.00213 - 0.01181), b=3.13 (2.92 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.0 ±0.4 se; based on size and trophs of closest relatives
Generation time: 4.1 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
Weerstandsvermogen (Ref.
120179): Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (35 of 100).
