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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
Écologie
; eau douce démersal. 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).
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 23.0 cm TL mâle / non sexé; (Ref. 27292)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 0; Rayons mous dorsaux (Total) : 65 - 79; Rayons mous anaux: 57 - 64; Vertèbres: 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).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves
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)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
Articles particuliers
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Sources Internet
Estimates based on models
Phylogenetic diversity index (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).
Niveau trophique (Ref.
69278): 3.2 ±0.40 se; based on food items.
Résilience (Ref.
120179): Haut, temps minimum de doublement de population inférieur à 15 mois (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\")
