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Siluriformes (Catfishes) >
Schilbeidae (Schilbid catfishes)
Etymology: uranoscopus: From the Greek "ouranos" (sky) and "skopos" (literally watchman, "skopeoo" means to look at), referring to the supero-lateral position of the eyes (Ref. 43912).
More on author: Rüppell.
Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet
Ökologie
; süßwasser demersal; potamodrom (Ref. 138143). 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).
Länge bei der ersten Reifung / Größe / Gewicht / Alter
Geschlechtsreife: Lm 21.0, range 12 - ? cm
Max length : 36.0 cm SL Männchen/unbestimmt; (Ref. 57127)
Rückenflossenstacheln (insgesamt) : 1; Afterflossenweichstrahlen: 59 - 73; Wirbelzahl: 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).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Adapted to riverine and lacustrine conditions. Adults live mainly in the open waters; predatory, carnivorous but not strictly piscivorous. Young are essentially entomophagous (Ref. 43912). Oviparous, eggs are unguarded (Ref. 205). Of some economic value to the fishermen especially in the Chad basin (Ref. 43912). Maximum reported total length 45 cm (Nile basin)(Ref. 43912).
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)
IUCN Rote Liste Status (Ref. 130435: Version 2025-2 (Global))
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Fischereien: weniger kommerziell
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Schätzungen auf der Grundlage von Modellen
Phylogenetischer Diversitätsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00550 (0.00251 - 0.01205), b=3.06 (2.87 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophische Ebene (Ref.
69278): 3.4 ±0.5 se; based on size and trophs of closest relatives
Widerstandsfähigkeit (Ref.
120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (K=1.30; tmax=3; assuming fec > 10,000).
Anfälligkeit der Fischerei (Ref.
59153): Low to moderate vulnerability (34 of 100).
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