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Siluriformes (Catfishes) >
Schilbeidae (Schilbid catfishes)
Etymology: uranoscopus: Named for Mr. Isidore Geoffroy St-Hilaire, collector of the type material of this nominal species (Ref. 43912).
More on author: Rüppell.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; Água doce demersal; potamódromo (Ref. 51243). Tropical
Africa: Niger (Lake Kainji and further downstream), Cross and Chad basins (Ref. 57127, 81643). Also in the Nile and Lake Turkana system (Ref. 43912, 81643).
Comprimento de primeira maturação / Tamanho / Peso / Idade
Maturity: Lm 21.0, range 12 - ? cm
Max length : 36.0 cm SL macho/indeterminado; (Ref. 57127)
Descrição suscinta
Morfologia | Morfometria
Espinhos dorsais (total): 1; Raios anais : 59 - 73; Vértebras: 50 - 57. Diagnosis: 13-16 gill rakers on lower limb of first gill arch; 57-75 branched anal-fin rays; eyes positioned dorso-laterally; adipose fin always absent (Ref. 43912, 57127, 81643). Often with a post-occipital hump, a character also sometimes found in Schilbe intermedius whose head profile is extremely variable (Ref. 57127, 81643). Posterior nostrils closer to each other than are anterior ones; nasal barbel at maximum reaching to midway between eye and opercle, but generally shorter; inner side of pectoral spine feebly serrated (Ref. 43912).
Adapted to riverine and lacustrine conditions; appears to live mainly in the open waters; predatory, carnivorous but not strictly piscivorous; young essentially entomophagous (Ref. 43912). Oviparous, eggs are unguarded (Ref. 205). Especially in the Chad basin of some economic value to the fishermen (Ref. 43912). Maximum reported total length 45 cm (Nile basin)(Ref. 43912).
Ciclo de vida ou comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Distinct pairing (Ref. 205).
De Vos, L., 2003. Schilbeidae. p. 97-116 In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douce et saumâtres de l'Afrique de l'Ouest, Tome 2. Coll. Faune et Flore tropicales 40. Musée Royal de l'Afrique Centrale, Tervuren, Belgique, Museum National d'Histoire Naturalle, Paris, France and Institut de Recherche pour le Développement, Paris, France. 815 p. (Ref. 57127)
Status na Lista Vermelha da UICN (Ref. 130435)
Ameaça para os humanos
Harmless
Uso pelos humanos
Pescarias: pouco comercial
Mais informação
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ColaboradoresFotosStamps, Coins Misc.SonsCiguateraVelocidadeTipo de nataçãoÁrea branquialOtólitosCérebrosVisão
Ferramentas
Relatórios especiais
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Estimates based on models
Índice de diversidade filogenética (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00589 (0.00263 - 0.01321), b=3.02 (2.83 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nível Trófico (Ref.
69278): 3.4 ±0.5 se; based on size and trophs of closest relatives
Resiliência (Ref.
120179): Elevada, tempo mínimo de duplicação da população menor que 15 meses (K=1.30; tmax=3; assuming fec > 10,000).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (34 of 100).
