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Characiformes (Characins) >
Alestidae (African tetras)
Etymology: Micralestes: Greek, mikros = small + Greek,lestes = thief (Ref. 45335).
Eponymy: Lieutenant Maurice Joseph Auguste Marie Raphael Storms (1875–1941) is described in Boulenger’s cryptic etymology as “…a cousin of the late Raymond Storms, so well-known for his important contributions to paleoichthyology”. [...] (Ref. 128868), visit book page.
More on author: Boulenger.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce pélagique; pH range: 6.0 - 7.6; dH range: 18 - 25. Tropical; 22°C - 26°C (Ref. 2059)
Africa: widely distributed in the Congo River basin (Ref. 42032) in Central African Republic (Ref. 45441) and Democratic Republic of the Congo (Ref. 42032). Also reported from the Rusizi and Malagarasi in Burundi (Ref. 98755), the Lake Chad basin in Central African Republic (Ref. 83569) and the Lake Tanganyika basin in Tanzania (Ref. 4967).
Taille / Poids / Âge
Maturité: Lm ? range ? - ? cm
Max length : 10.0 cm SL mâle / non sexé; (Ref. 4967)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 2; Rayons mous dorsaux (Total) : 8; Épines anales: 3; Rayons mous anaux: 15 - 16. Body height 2.9-3.9 times in standard length (Ref. 42032). Head length 3.7-3.9 times in standard length (Ref. 42032). Cuspid number: external row on upper jaw 5-6, internal row on upper jaw 6-8, external row on lower jaw 5-8, internal row on lower jaw 1 (Ref. 42032). Weakly developed black mediolateral band in front of the pelvic fins but more expressed to the back of the body (Ref. 42032). Mediolateral band silvery in live specimens (Ref. 42032). Fins without black spot (Ref. 42032).
Body shape (shape guide): fusiform / normal.
Inhabits lakes (Ref. 4967).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Paugy, D., 1984. Characidae. p. 140-183. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ORSTOM, Paris and MRAC, Tervuren. Vol. 1. (Ref. 5331)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
Articles particuliers
Télécharger en XML
Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01072 (0.00491 - 0.02339), b=3.02 (2.84 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Réf.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Résilience (Réf.
120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Vulnérabilité de la pêche (Ref.
59153): Low vulnerability (10 of 100).
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