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Characiformes (Characins) >
Distichodontidae (Distichodus)
Etymology: Nannocharax: Latin, nannus = small + Greek, charax = a marine fish without identification (Ref. 45335); zebra: The species name zebra is an allusion to the striped pattern of preserved specimens (Ref. 80507).
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
; agua dulce pelágico. Tropical; 6°N - 5°N, 6°E - 10°E
Africa: Cross River and Niger Delta (Ref. 80507).
Tamaño / Peso / Edad
Madurez: Lm ?  range ? - ? cm
Max length : 4.1 cm SL macho / no sexado; (Ref. 80507)
Descripción breve
Claves de identificación | Morfología | Morfometría
Espinas dorsales (total) : 0; Radios blandos dorsales (total) : 12 - 14; Espinas anales: 0; Radios blandos anales: 12 - 13. Diagnosis: Nannocharax zebra is distinguished from all other described Nannocharax species except N. schoutedeni, N. latifasciatus, N. ansorgii and N. procatopus, by its shorter distance between posterior border of anus and articulation of first anal-fin ray (2.2-3.8 vs. 4.2-14.2% of standard length) (Ref. 80507). It differs from N. schoutedeni by having 39-43 vs. 36 or 37 lateral line scales, from N. latifasciatus by its major depth of caudal peduncle (55.9-63.8% vs. 48.1-50.8% of standard length), from N. ansorgii by having 12-13 rather than 9 anal-fin rays, and from N. procatopus by having a lower caudal peduncle length (11.3-15.2% vs. 18.0% of standard length), and by having 39-43 rather than 36 lateral line scales (Ref. 80507).
Body shape (shape guide): elongated; Cross section: compressed.
Type specimens collected inshore in areas of relatively calm water among fine twigs of a fallen tree; these twigs were not reaching soil, but remained attached to the crown of the fallen tree and reaching into the free water column; specimens sometimes rested on the fine twigs, but mostly were seen moving or hovering in the free water column in a water depth of aproximately 50-100 cm, well above the bottom which consisted of leaflitter, sand and fine detritus (Ref. 80507).
Ciclo vital y comportamiento de apareamiento
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Dunz, A.R. and U.K. Schliewen, 2009. Description of two new species of Nannocharax Günther, 1867 (Teleostei: Characiformes: Distichodontidae) from the Cross River, Cameroon. Zootaxa 2028:1-19. (Ref. 80507)
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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