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Osteoglossiformes (Bony tongues) >
Mormyridae (Elephantfishes)
Etymology: Petrocephalus: Latin, petra = stone + Greek, kephale = head (Ref. 45335).
Eponymy: Dr William John Ansorge (1850–1913) was an English explorer and collector who was active in Africa in the second half of the 19th century. [...] (Ref. 128868), visit book page.
More on author: Boulenger.
Ambiente: milieu / zona climática / intervalo de profundidade / gama de distribuição
Ecologia
; Água doce demersal. Tropical; 20°C - 25°C (Ref. 13614)
Africa: Upper and Lower Niger, the Bénuoé, coastal rivers of Nigeria.
Comprimento na primeira maturidade / Tamanho / Peso / Idade
Maturidade: Lm 1.8  range ? - ? cm
Max length : 14.1 cm SL macho/indeterminado; (Ref. 2915)
Espinhos dorsais (total) : 0; Raios dorsais moles (total) : 29 - 34; Espinhos anais: 0; Raios anais moles: 35 - 39. Body depth 2.9-3.5 x SL, caudal peduncle depth 18.8-21.6 x SL, base of anal fin 3.1-3.4 x SL. Eye diameter 3.0-3.5 x head length. Body silvery with 1st rays of dorsal darkened and dorsal spot separate from dorsal fin.
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Affinities: P. bane and P. sauvagii.
Bigorne, R., 1990. Mormyridae. p. 122-184. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux saumâtres d'Afrique de l'Ouest. tome 1. Faune Trop. 28. Musée Royal de l'Afrique Centrale, Tervuren, and ORSTOM, Paris. (Ref. 2915)
Categoria na Lista Vermelha da IUCN (Ref. 130435: Version 2025-2 (Global))
Ameaça para o homem
Harmless
Utilização humana
Ferramentas
Relatórios especiais
Descarregue XML
Fontes da internet
Estimativas baseadas em modelos
Índice de diversidade filogenética (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01413 (0.00800 - 0.02494), b=2.84 (2.69 - 2.99), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245). |
Nível Trófico (Ref. 69278) |
3.3 ±0.4 se; based on size and trophs of closest relatives |
Resiliência (Ref. 120179) |
Médio, tempo mínimo de duplicação da população 1,4 - 4,4 anos (Fec < 1,000). |
Vulnerabilidade da pesca (Ref. 59153) |
Low vulnerability (16 of 100). 🛈 |