>
Characiformes (Characins) >
Distichodontidae (Distichodus)
Etymology: Nannocharax: Latin, nannus = small + Greek, charax = a marine fish without identification (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Ecologie
; zoet water pelagisch. Tropical; 23°C - 26°C (Ref. 12468)
Africa: found in the area comprised between the Oshun River in Nigeria and the Cross River in Cameroon (Ref. 2936, 81638, 86396).
Grootte / Gewicht / Leeftijd
Maturity: Lm ?  range ? - ? cm
Max length : 4.9 cm SL mannelijk / geslacht onbekend; (Ref. 2936)
Dorsale stekels (totaal) : 0; Dorsale zachte stralen (totaal) : 12 - 14; Anale stekels: 0; Anale zachte stralen: 13 - 15. Diagnosis: 40-42 (Ref. 2936, 86396) or 39-43 (Ref. 81638) lateral line scales. Snout and anal fin long; head length 3.1-3.5x SL; 11-12 scales around caudal peduncle; 1 or 2 scales between anus and anal-fin origin; pectoral with total of 10-12 branched rays; pelvic with total of 9-10 branched rays; pectoral fins not reaching to pelvic fin bases; dorsal-fin origin distinctly ahead of pelvic-fin insertions (Ref. 2936, 86396). Head and body with dark band along mid-lateral surface from snout to at least rear of caudal peduncle (Ref. 81638). Mid-lateral band on body broad, with scale-centres light, and ending posteriorly in a rounded blotch that extends partly unto caudal-fin base (Ref. 2936, 86396). 12-13 (Ref. 81638) or 12-14 (Ref. 2936, 86396) total dorsal fin rays. 15 (Ref. 81638) or 13-15 (Ref. 2936, 86936) total anal fin rays.
Levenscyclus en paargedrag
Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven
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)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gevaar voor de mens
Harmless
Gebruik door de mens
Tools
Speciale rapporten
Download XML
Internetbronnen
Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00380 (0.00147 - 0.00981), b=3.11 (2.88 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).