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Characiformes (Characins) >
Distichodontidae (Distichodus)
Etymology: Nannocharax: Latin, nannus = small + Greek, charax = a marine fish without identification (Ref. 45335); hastatus: The adjectival species name hastatus, from the Latin 'hasta', meaning spear, is an allusion to the spearshaped body of the species (Ref. 96084).
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
; agua dulce pelágico. Tropical
Africa: Likouala drainage in Republic of Congo (Ref. 96084) and Pool Malebo and Middle Congo River, including Luilaka River and Tshuapa River, in Democratic Republic of the Congo (Ref. 96084).
Tamaño / Peso / Edad
Madurez: Lm ?  range ? - ? cm
Max length : 3.2 cm SL macho / no sexado; (Ref. 96084)
Descripción breve
Claves de identificación | Morfología | Morfometría
Espinas dorsales (total) : 0; Radios blandos dorsales (total) : 11 - 14; Espinas anales: 0; Radios blandos anales: 13 - 15; Vértebra: 40 - 42. Diagnosis: Nannocharax hastatus is distinguished from all congeners except N. maculicauda and N. ocellicauda by the possession of a largely unpigmented body except for a dark line along the bases of the dorsal and anal fins and a longitudinally elongate, ovoid, dark spot on the posterior portion of the caudal peduncle and bases of the central caudal-fin rays; the elongate form of the head and body are also unique to these three species in the genus (Ref. 96084). Nannocharax hastatus differs from N. maculicauda in the numbers of scale rows around the caudal peduncle, 18-20 vs. 14-16; and pored scales along the lateral line, 6-9 vs. 55-61 (Ref. 96084). Nannocharax hastatus is distinguished from N. ocellicauda in the number of scales along the lateral-line scale series, 59-68 vs. 50-56; and scale rows around the caudal peduncle, 18-20 vs. 13-16 (Ref. 96084).
Ciclo vital y comportamiento de apareamiento
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Jerep, F.C. and R.P. Vari, 2014. New species of Nannocharax (Characiformes: Distichontidae) from the Northwestern Congo River Basin, with appraisal of Hemigrammocharax. Copeia 2014(1):44-49. (Ref. 96084)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
Pesquerías: de interés potencial
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=0.00447 (0.00185 - 0.01077), b=3.17 (2.96 - 3.38), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Nivel trófico (Referencia 69278) |
3.1 ±0.4 se; based on size and trophs of closest relatives |
Vulnerabilidad pesquera (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |
Categoría de precios (Ref. 80766) |
Unknown.
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