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Characiformes (Characins) >
Alestidae (African tetras)
Etymology: Nannopetersius: Latin, nannus = small + Peters, 1877, naturalist, expeditionary in Asia.
More on author: Poll.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; acqua dolce pelagico. Tropical; 4°S - 5°S
Africa: present in Ntem, Ogowe, Nyanga and Kouilou River basins (Ref. 80290). Also reported from the lower Congo (Ref. 94750) and as "widely distributed in the Congo River basin from Cameroon to the Republic of Congo" (Ref. 80290) but this needs confirmation.
Size / Peso / Age
Maturity: Lm ?  range ? - ? cm
Max length : 7.0 cm SL maschio/sesso non determinato; (Ref. 80290)
Spine anali: 0; Raggi anali molli: 23 - 26. Diagnosis: 10-12 gill rakers on lower limb of first arch; flanks with dark lateral pigment band continuous from opercle through caudal fin base and extending onto median caudal fin rays; dorsal and ventral caudal fin lobes with pigment stripe arranged more or less vertically across posterior third of fin (Ref. 80290).
Life cycle and mating behavior
Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve
Paugy, D. and S.A. Schaefer, 2007. Alestidae. p. 347-411. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) Poissons d'eaux douces et saumâtres de basse Guinée, ouest de l'Afrique centrale/The fresh and brackish water fishes of Lower Guinea, west-central Africa. Vol. 1. Coll. Faune et Flore tropicales 42. Istitut de recherche pour le développement, Paris, France, Muséum nationale d'histoire naturelle, Paris, France and Musée royale de l'Afrique centrale, Tervuren, Belgique. 800 p. (Ref. 80290)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Strumenti
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01148 (0.00528 - 0.02495), b=3.00 (2.82 - 3.18), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.1 ±0.3 se; based on size and trophs of closest relatives
Resilienza (Ref.
120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).