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> Osteoglossiformes (Bony tongues) > Mormyridae (Elephantfishes)
Etymology: Isichthys:Greek, isos = equal + Greek, ichthys = fish (Ref. 45335). Eponymy: Joseph Henry (1797–1878) was the first Secretary of the Smithsonian Institution (1846– 1878). [...] (Ref. 128868), visit book page. More on author: Gill.
Africa: coastal basins of Guinea, Sierra Leone and Liberia (Ref. 81274) and the Niger basin through Cameroon and Gabon to the Kouilou River basin (Ref. 81635). Also in the Chiloango in Cabinda Province of Angola (Ref. 120641).
サイズ / 重さ / 年齢
成熟: Lm ?  range ? - ? cm Max length : 28.7 cm SL オス/雌雄の選別がない; (Ref. 2915)
Possesses electroreceptors over the entire head, the dorsal region and some parts of the ventral region; absent from the side and the caudal peduncle where the electric organ is located. Electric organ discharge (EOD) rates are of low frequency and sexually dimorphic as to waveform (Ref. 10011).
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)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
系統多様性指数 (参照 82804): PD50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00813 (0.00456 - 0.01448), b=2.70 (2.55 - 2.85), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
栄養段階 (参照 69278): 3.2 ±0.3 se; based on size and trophs of closest relatives
回復力 (参照 120179): 高い, 15か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
漁業の脆弱性 (Ref. 59153): Low to moderate vulnerability (25 of 100). 🛈