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Petrocephalus sauvagii (Boulenger, 1887)

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drawing shows typical species in Mormyridae.

Congo (Kinshasa) country information

Common names: [No common name]
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Widely distributed in the Congo River basin; known from the lower Congo (Ref. 1879), Pool Malebo (Ref. 41585, 44985, 88942), middle Congo River (Ref. 1879, 4910, 41594), Kasai (Ref. 46243), Sankuru (Ref. 88943), lakes Mai-Ndombe (Ref. 1879) and Tumba (Ref. 44912), the Tshuapa (Ruki drainage)(Ref. 41580), Ubangui (Ref. 45441), Uele (Ref. 1879, 41594), Itimbiri (Ref. 41590, 106290), Aruwimi/Ituri (Ref. 41594, 106290), Lindi-Tshopo (Ref. 106290), Wagenia Falls (Ref. 106245), Lualaba (Ref. 45434, 45616) and upper Lualaba (Lake Upemba) (Ref. 45616). Report from the Chiloango (Ref. 88943) is unconfirmed in Ref. 81635. Type locality of the holotype of Mormyrus (Petrocephalus) sauvagii: 'the creeks of the Lower Congo and the tributary streams' (Ref. 42539). Also Ref. 1878.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/cg.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Poll, M., 1959
National Database:

Common names from other countries

Rypoun sauvageův, Sauvage´i kivipeakala, 萨氏岩头长颌鱼, ... more

分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa

> Osteoglossiformes (Bony tongues) > Mormyridae (Elephantfishes)
Etymology: Petrocephalus: Latin, petra = stone + Greek, kephale = head (Ref. 45335);  sauvagii: Named in honour of Dr. H.E. Sauvage (Ref. 42539).
  More on author: Boulenger.

Environment: milieu / climate zone / depth range / distribution range 生態学

; 新鮮な水 底生の.   Tropical

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

Africa: Congo River basin and Niger Delta (Ref. 2915, 85331). Possibly present in the coastal Nigerian fringe (Ref. 2915). Reports from coastal basins of Cameroon (Ref. 51193) or the Chiloango (Ref. 88943) questionable as the species is reported to be absent from the Lower Guinea Ichthyological Province (Ref. 85331).

サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - ? cm
Max length : 17.5 cm TL オス/雌雄の選別がない; (Ref. 42539)

簡単な記述 検索表 | 形態学 | 形態計測学

背面の脊椎 (合計) : 0; 背鰭 (合計) : 26 - 28; 肛門の骨: 0; 臀鰭: 34 - 36. Petrocephalus sauvagii is distinguished from all other Petrocephalus species in Central Africa by the following combination of characteristics: very wide mouth (mouthwidth 2,7 to 3,7 in head length) associated with a characteristic head shape when viewed from above, anal fin with at least 32 branched rays, dorsal fin with at least 25 branched rays, mouth subterminal, ration between the head length and the mouth position as large as 7,4 (Ref. 85331). It has 17-30 teeth in upper jaw, and 29-35 teeth in lower jaw (Ref. 2915, 85331). Pigmentation pattern with two melanin markings, sometimes of weak intensity or even scarcely visible: (1) an irregularly round black mark below the anterior base (first to fourth rays) of the dorsal fin; and (2) an ovoid blackish mark, often irregularly shaped, at the base of the caudal fin, extending onto the upper and lower fleshy lobes of the fin (Ref. 85331).

生物学     用語集 (例 epibenthic)

Affinities: Same color as P. soudanensis, but distinguished by mouth position, number of teeth and eye size; same morphology as P. bane and P. ansorgii (Ref. 2915).

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生

主な参考文献 Upload your references | 参考文献 | コーディネーター | 協力者

Lévêque, C.D. Paugy and G.G. Teugels (eds.), 1990. Faune des poissons d'eaux douces et saumâtres d'Afrique de l'Ouest. Tome 1. Coll. Faune Tropicale N° 28. Musée Royal de l'Afrique Centrale, Tervuren, Belgique et O.R.S.T.O.M., Paris, France. 384 p. (Ref. 2703)

IUCNのレッドリストの状況は (Ref. 130435)

  軽度懸念 (LC) ; Date assessed: 04 September 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless




Human uses

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01585 (0.00697 - 0.03603), b=2.85 (2.67 - 3.03), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).
栄養段階 (Ref. 69278):  3.3   ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  高い, １５か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).