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Siluriformes (Catfishes) >
Schilbeidae (Schilbid catfishes)
Etymology: Irvineia: It is the name of a seaweed; orientalis: From the Latin "orientalis" (from the East) referring to the East African distribution of this species (Ref. 43912).
Eponymy: Dr Frederick Robert Irvine (1898–1962) was a botanist and science teacher who made a collection of fishes near Accra, Gold Coast (Ghana). [...] (Ref. 128868), visit book page.
More on author: Trewavas.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; Água doce demersal. Tropical; 10°N - 0°N
Africa: rivers Juba and Uebi Shebeli in Somalia and Ethiopia (Ref. 43912).
Tamanho / Peso / Idade
Maturity: Lm ?  range ? - ? cm
Max length : 50.2 cm SL macho/indeterminado; (Ref. 43912)
Espinhos dorsais (total) : 1; Raios dorsais (total) : 6. Diagnosis: adipose fin always present; posterior nostrils always closer to each other than anterior ones; 7-9 branched pelvic fin rays; nasal barbel at least reaching to midway between eye and opercle; posterior side (inner side) of pectoral spine feebly serrated; swim-bladder with posterior caecum which extends caudally on one side of body (dextrally or sinistrally) to posterior end of anal fin (Ref. 43912).
Feeds at least in part on insects (Ref. 43912). Oviparous, eggs are unguarded (Ref. 205).
Ciclo de vida ou comportamento de acasalamento
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)
Status na Lista Vermelha da UICN (Ref. 130435: Version 2024-2)
Ameaça para os humanos
Harmless
Uso pelos humanos
Ferramentas
Relatórios especiais
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Fontes da internet
Estimates based on models
Índice de diversidade filogenética (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00631 (0.00205 - 0.01941), b=3.16 (2.91 - 3.41), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nível Trófico (Ref.
69278): 3.5 ±0.5 se; based on size and trophs of closest relatives
Resiliência (Ref.
120179): Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (45 of 100).