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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: Boulenger.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
; zoet water demersaal. Tropical; 3°N - 9°S
Africa: Lakes Victoria, Kyoga, Edward, Rukwa and Tanganyika (Ref. 248). Also in Malagarasi River (Ref. 27292) and Rusizi River (Ref. 98755).
Grootte / Gewicht / Leeftijd
Maturity: Lm ? range ? - ? cm
Max length : 23.0 cm TL mannelijk / geslacht onbekend; (Ref. 27292)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 0; Dorsale zachte stralen (totaal) : 65 - 79; Anale zachte stralen: 57 - 64; Wervels: 52 - 55. Pectoral fin spine serrated on both inner and outer sides (Ref. 34290). Head oval-shaped in dorsal outline; snout short and slightly rounded; eyes more dorsally located. Frontal fontanelle long and narrow (`knife-shaped'); occipital fontanelle long and oval-shaped. Supraorbital and `dermospenoticum' joined. Tooth plates relatively small. gill rakers long, slender and distantly set. Suprabranchial organ well developed. Openings of the secondary sensory canals regularly arranged on flanks.
Facultative air-breathing (Ref. 126274); Occurs in rivers, streams, swamps and lakes. Occurs along muddy shores and in papyrus swamps in Lake Victoria; also in ponds of rice schemes (Ref. 36900), side-arms of larger waters (Ref. 78218) and in mountainous streams (Ref. 27292). Mainly insectivorous (Ref. 248), a wide variety of insect larvae and crustaceans (Ref. 78218). Also small fish are taken (Ref. 27292). Might undertake mass migrations up rivers and streams, maybe to spawn (Ref. 27292).
Levenscyclus en paargedrag
Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven
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)
Gevaar voor de mens
Harmless
Gebruik door de mens
Tools
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00776 (0.00343 - 0.01757), b=2.97 (2.79 - 3.15), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.2 ±0.40 se; based on food items.
Weerstandsvermogen (Ref.
120179): Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (13 of 100).
![Image of Clarias alluaudi (Alluaud\](/images/thumbnails/jpg/tn_Clall_u0.jpg "Image of Clarias alluaudi (Alluaud\")
