This website uses cookies to enhance your browsing experience and ensure the functionality of our site. For more detailed information about the types of cookies we use and how we protect your privacy, please visit our Privacy Information page.
×
Cookie Settings
This website uses different types of cookies to enhance your experience. Please select your preferences below:
Performance
These cookies help us understand how visitors interact with our website by collecting and reporting information anonymously. For example, we use Google Analytics to generate web statistics, which helps us improve our website's performance and user experience. These cookies may track information such as the pages visited, time spent on the site, and any errors encountered.
> Characiformes (Characins) > Distichodontidae (Distichodus)
Etymology: Nannocharax:Latin, nannus = small + Greek, charax = a marine fish without identification (Ref. 45335). More on author: Boulenger.
Africa: found in the Sanaga (Ref. 80507, 81638), Ntem (Ref. 70994, 51193, 81638), Kienké and Nyong (Ref. 7094, 81638) River systems. Also found in the Dja River (Sangha drainage, middle Congo River basin) (Ref. 7094, 46233, 80507, 81638).
サイズ / 重さ / 年齢
成熟: Lm ?  range ? - ? cm Max length : 5.6 cm SL オス/雌雄の選別がない; (Ref. 81638)
背面の脊椎 (合計) : 0; 背鰭 (合計) : 12 - 15; 肛門の骨: 0; 臀鰭: 9 - 12. Diagnosis: 46-50 lateral line scales, pored except for 1-2 terminal scales; 7-9 branched anal fin rays; tip of pelvic fin falling short of, or barely extending to rear of, vent; dorsal portions of body with distinct dark, vertically oriented dark marks that form saddle-shaped pigmentation pattern; dark pigmentation on body extending distinctly below horizontal through base of pectoral fin in form of relatively narrow, vertical bars; adipose fin unpigmented (Ref. 81638).
Body shape (shape guide): elongated.
Vari, R.P., 2007. Distichodontidae. p. 412-465. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) The fresh and brackish water fishes of Lower Guinea, West-Central Africa. Volume I. Collection Faune et Flore tropicales 42. Institut de Recherche pour le Développement, Paris, France, Muséum National d’Histoire Naturelle, Paris, France, and Musée Royal de l’Afrique Centrale, Tervuren, Belgium. 800 pp. (Ref. 81638)
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 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00447 (0.00186 - 0.01072), b=3.17 (2.97 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
栄養段階 (参照 69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
漁業の脆弱性 (Ref. 59153): Low vulnerability (10 of 100). 🛈