Issue
Junior synonym Nannocharax seyboldi Schultz, 1942 is valid according to
Environment: milieu / climate zone / depth range / distribution range
البيئة
; المياه العذبة محيطي; pH range: 6.0 - 7.5; dH range: 7 - 15; سمكة نهرية (Ref. 51243). Tropical; 22°C - 27°C (Ref. 1672)
Africa: widespread, known from Senegal to Cameroon, including the Lake Chad basin (Ref. 2936, 80507, 81638, 86396). Also in the Dja and Bumba rivers (middle Congo River basin) in Cameroon (Ref. 46233). Reported from Ntem and Kribi Rivers (Ref. 51193), but not confirmed in Ref. 81638. Holotype from Gabon (Ref. 93570), without further specifications.
الحجم / وزن / العمر
Maturity: Lm ? range ? - ? cm
Max length : 6.6 cm SL ذكر/ مختلط الجنس; (Ref. 2936)
الأشواك الظهرية (المجموع) : 0; الأشعة الظهرية الناعمة (المجموع) : 11 - 14; شوكة شرجية: 0; أشعه شرجية لينه: 8 - 12. Diagnosis: body slightly elongate; head length 3.7-4.3x SL; 2.5-6 scales between anus and anal-fin base; 12-16 scales around caudal peduncle; 12-18 pectoral branched rays; 8-10 pelvic branched rays; series of separate spots along lateral line, not always distinct (frequently suffused by marbled color pattern on sides); scale formula 4-5.5/40-46 (Ref. 2936, 86396). 43-46 pored (except terminal 1-2) lateral line scales (Ref. 81638). Tip of pelvic fin extending distinctly beyond vent; dorsal portions of body with distinct dark, vertically oriented dark marks forming saddle-shaped pigmentation pattern; various dark marks on lateral surface of body without prominent, horizontally elongate dark spots on mid-lateral surface of body; dark pigmentation on body above horizontal through base of pectoral fin (Ref. 81638). 12-14 (Ref. 81638) or 11-14 (Ref. 2936, 86396) total dorsal fin branched rays. 10-12 (Ref. 81638) or 8-12 (Ref. 2936, 86396) total anal fin branched rays.
Maximum TL was recorded at 7.8 cm (Ref. 7094). Feeds on small invertebrates (Ref. 13614).
Life cycle and mating behavior
النضج | التكاثر | وضع البيض | بيض | الخصوبة | Larvae
Gosse, J.-P. and E.J. Coenen, 1990. Distichodontidae. p. 237-260. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douces et saumâtres de l'Afrique de l'Ouest. Tome I. Coll. Faune Tropicale n° XXVIII. Musée Royal de l'Afrique Centrale, Tervuren and O.R.S.T.O.M., Paris, 384 p. (Ref. 2936)
IUCN Red List Status (Ref. 130435: Version 2024-1)
استخدامات بشرية
مصائد: تجاري; حوض مائي: تجاري
أدوات
تقارير خاصة
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مصادر علي الأنترنت
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00550 (0.00296 - 0.01020), b=3.22 (3.05 - 3.39), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
مستوى غذائي (Ref.
69278): 3.4 ±0.45 se; based on food items.
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
