Taxonomic Remarks
Affinities: most similar to M. elongatus, from which it differs in the presence of multicuspid (vs conical, monocuspid) inner dentary teeth, inner premaxillary and outer dentary teeth with greater number of cusps and a slightly more robus body (Ref. 80290).
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
; agua dulce pelágico; pH range: 6.2 - 8.0; dH range: ? - 25; potamodromo (Ref. 51243). Tropical; 22°C - 26°C (Ref. 1672)
Africa: Congo, Okavango, Zambezi (Ref. 7248, 120641), Kunene and east coast rivers south to the Pongolo (Ref. 7248), Cross and Sanaga Rivers (Ref. 80290) and Tanzania (Ref. 4967). Nilo-Sudan and West-African reports of M. acutidens (e.g. Ref. 367, 51193) are misidentifications of M. elongatus (see DVD version of Ref. 81279; see also Ref. 2880).
Longitud en la primera madurez / Tamaño / Peso / Edad
Madurez: Lm 3.4  range ? - ? cm
Max length : 9.0 cm SL macho / no sexado; (Ref. 4967); peso máximo publicado: 2.00 g (Ref. 3799); edad máxima reportada: 3.00 años (Ref. 7248)
Espinas dorsales (total) : 0; Radios blandos dorsales (total) : 10 - 11; Espinas anales: 0; Radios blandos anales: 17 - 20. Diagnosis: inner dentary teeth multicuspid; 14-17 anal fin branched rays; dorsal fin apical tip black; scales of flank without melanophores concentrated along basal margin, pigment diffuse or absent (Ref. 80290).
Body shape (shape guide): fusiform / normal; Cross section: oval.
Shoals in clear, flowing or standing, open water; appears to co-exist with the tigerfish Hydrocynus forskalii in open water although it is heavily preyed upon by that predator, particularly those shoals of tigerfish ranging up to 45 cm in length (Ref. 13337). Omnivorous, often feeding from surface waters on winged insects; also takes insect larvae, crustaceans and eggs and fry of other fish (Ref. 13337). Matures after a year; partial spawner of moderate fecundity, with usually fewer than 700 eggs per female; shoals migrate upstream after first summer rains; breeds throughout the summer months; used as forage fish and as bait for tigerfish and pike (Ref. 7248).
Ciclo vital y comportamiento de apareamiento
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Skelton, P.H., 1993. A complete guide to the freshwater fishes of southern Africa. Southern Book Publishers. 388 p. (Ref. 7248)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
Pesquerías: sin interés; Acuario: Comercial; carnada: usually
Herramientas
Informes especiales
Descargar XML
Fuentes de Internet
Estimaciones basadas en modelos
Índice de diversidad filogenética (Referencia 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01148 (0.00627 - 0.02102), b=3.11 (2.95 - 3.27), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245). |
Nivel trófico (Referencia 69278) |
2.9 ±0.33 se; based on food items. |
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Generation time |
1.8 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies. |
Resiliencia (Referencia 120179) |
Alto, población duplicada en un tiempo mínimo inferior a 15 meses (K=0.63; tmax=3). |
Vulnerabilidad pesquera (Ref. 59153) |
Low vulnerability (23 of 100). 🛈 |