Clarias laeviceps, Catfish

Clarias laeviceps Gill, 1862

Catfish
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Clarias laeviceps
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> Siluriformes (Catfishes) > Clariidae (Airbreathing catfishes)
Etymology: Clarias: Greek, chlaros = lively, in reference to the ability of the fish to live for a long time out of water.
More on author: Gill.

Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied Ecologie

; zoet water demersaal. Tropical; 8°N - 3°N

Verspreiding Gebieden | FAO regio's | Ecosystemen | Voorkomen | Verspreidingskaart | Introducties | Faunafri

Africa: C. laeviceps laeviceps: river St. John in Liberia to the Volta in Ghana; also found in the upper Niger in Guinea (Ref. 57129). Possibly also in the St. Paul River (Ref. 248, 13331). C. laeviceps dialonensis: rivers coming out of the Fouta Djalon (Konkouré, Kolenté), the upper Senegal River in Guinea and coastal basins in Sierra Leone; endemic to that region (Ref. 57129).

Grootte / Gewicht / Leeftijd

Maturiteit: Lm ?  range ? - ? cm
Max length : 31.7 cm TL mannelijk / geslacht onbekend; (Ref. 57129)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale stekels (totaal) : 0; Dorsale zachte stralen (totaal) : 74 - 93; Anale stekels: 0; Anale zachte stralen: 60 - 75; Wervels: 65 - 69. Diagnosis: body very elongate, its depth 9.1-13.6% SL (m = 12.0)(Ref. 57129). Head short and broad (Ref. 248, 571429), oval-shaped dorsally (Ref. 248), its length 17.8-22.7% SL (m=21.1), its width 13.4-17.0% SL (m=16.0)(Ref. 57129). Snout broadly rounded; eyes more laterally placed (Ref. 248). Interorbital distance large, 44.7-54.8% HL (m = 49.5)(Ref. 57129). Tooth plates broad (Ref. 248, 57129), width of premaxillary plate 31.8-41.3% HL, width of vomerine plate 25.6-35.0% HL (Ref. 57129). Frontal fontanelle intermediate between "knife-shaped" and "sole-shaped"; occipital fontanelle rather long and oval shaped; supraorbital and "dermosphenotic" bones become joined in specimens between 80 and 100 mm TL (Ref. 248). Dorsal and anal fins very long (63.2-72.0% and 49.7-57.6% SL respectively) (Ref. 57129). Gill rakers small, slender and distantly set; suprabranchial organ partially fills chamber; pectoral spine rather thin and slightly curved (Ref. 248). Coloration: no information on colour in life (Ref. 57129). Preserved specimens: 2 types of colouration: one uniform, with back and sides blackish-brown and belly beige; and a marbled pattern with light spots against a dark background on back and sides, and pale brown on belly (Ref. 57129). Caudal fin with dark vertical bar occupying 2/3 of its base, dividing it in a dark anterior and a light posterior part (Ref. 57129).
Body shape (shape guide): elongated; Cross section: circular.

Biologie     Verklarende woordenlijst (bv. epibenthic)

Facultative air-breathing (Ref. 126274); Nothing is known regarding the biology of this species (Ref. 78218). Max. reported size of C. laeviceps laeviceps and C. laeviceps dialonensis is 317mm TL and 257mm TL respectively (Ref. 57129)

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

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Teugels, G.G., 1986. A systematic revision of the African species of the genus Clarias (Pisces; Clariidae). Ann. Mus. R. Afr. Centr., Sci. Zool., 247:199 p. (Ref. 248)

Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))

  Kwetsbaar (VU) (B2ab(i,ii,iii)); Date assessed: 29 April 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

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Schattingen op basis van modellen

Fylogenetische diversiteitsindex
(Ref. 82804)
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00776 (0.00372 - 0.01620), b=2.96 (2.79 - 3.13), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Trofisch niveau
(Ref. 69278)
3.4   ±0.5 se; based on size and trophs of closest relatives
Weerstandsvermogen
(Ref. 120179)
Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Kwetsbaarheid van de visserij
(Ref. 59153)
Low to moderate vulnerability (27 of 100). 🛈