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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 climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce demersale. Tropical; 20°C - 25°C (Ref. 13614)
Africa: Upper and Lower Niger, the Bénuoé, coastal rivers of Nigeria.
Lunghezza alla prima maturità / Dimensione / Peso / Età
Maturità: Lm 1.8  range ? - ? cm
Max length : 14.1 cm SL maschio/sesso non determinato; (Ref. 2915)
Spine dorsali (totale) : 0; Raggi dorsali molli (totale) : 29 - 34; Spine anali: 0; Raggi anali molli: 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)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01413 (0.00804 - 0.02483), b=2.85 (2.70 - 3.00), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Livello trofico (Fonte Biblio.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Resilienza (Fonte Biblio.
120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (Fec < 1,000).
Vulnerabilità della pesca (Ref.
59153): Low vulnerability (10 of 100).
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