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Siluriformes (Catfishes) >
Schilbeidae (Schilbid catfishes)
Etymology: brevianalis: From the Latin "brevis" (short) and "anus" (here referring to the anal fin) because of the short anal fin and the low number of anal fin rays in the types of this species (Ref. 43912).
More on author: Pellegrin.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; Água doce demersal. Tropical; 24°C - 27°C (Ref. 12468)
Africa: Nigeria to Cameroon (Ref. 57127), possibly also from coastal rivers in Togo (Ref. 78218). Known from the rivers Ogun (Ref. 13331), lower Niger (Ref. 13331, 57127), Kwa-Ibo and Cross in Nigeria (Ref. 43912, 57127), and the Wouri, Sanaga and Nyong in Cameroon (Ref. 7351, 43912, 81643). Report from Ogowe (Ref. 43912) refers to S. laticeps (Ref. 81643). Report from the Congo River basin (Ref. 51193) not confirmed in Ref. 43912, 78218 or 81643.
Tamanho / Peso / Idade
Maturity: Lm ? range ? - ? cm
Max length : 8.2 cm SL macho/indeterminado; (Ref. 81643)
Descrição breve
Morfologia | Morfometria
Espinhos dorsais (total): 1; Raios anais moles: 34 - 39. Diagnosis: small species, less than 100 mm long; eyes small, diameter not exceeding 23% of head length; inner margin of pectoral-fin spine weakly denticulate (Ref. 43912, 57127, 81643). Head rounded (Ref. 43912). Nasal barbels always extending beyond hind margin of eye (Ref. 57127, 81643) but not beyond anterior border of opercle (Ref. 43912). Adipose fin always present (Ref. 43912, 57127, 81643) and fully developed (Ref. 57127, 81643). 34-39 branched anal-fin rays and 6-8 gill rakers on lower limb of first gill arch (Ref. 57127, 81643). Colour pattern marbled (Ref. 43912, 57127, 81643). Barbels well developed (Ref. 81643). Posterior nostrils at same distance or closer to each other than the anterior pair (Ref. 43912, 81643).
Oviparous, eggs are unguarded (Ref. 205). Occasionally imported from Nigeria to Europe or America for aquarium purposes (Ref. 43912).
Life cycle and mating behavior
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Distinct pairing (Ref. 205).
De Vos, L., 1995. A systematic revision of the African Schilbeidae (Teleostei, Siluriformes). With an annotated bibliography. Ann. Mus. R. Afr. Centr., Sci. Zool., 271:1-450. (Ref. 43912)
Categoria na Lista Vermelha da IUCN (Ref. 130435)
Ameaça para o homem
Harmless
Utilização humana
Pescarias:
Mais informação
Idade/TamanhoCrescimentoComprimento-pesoComprimento-comprimentoFrequência de comprimentoMorfometriaMorfologiaLarvasDinâmica larvarRecrutamentoAbundânciaBRUVS
ReferênciasAquaculturaPerfil para aquaculturaEstirpesGenéticaElectrophoresesHereditariedadeDoençasProcessamentoNutrientsMass conversion
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Relatórios especiais
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Fontes da 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=0.00589 (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): 3.2 ±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 (Assuming fec > 10,000).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
