Thrattidion noctivagus, Sanaga pygmy herring

Thrattidion noctivagus Roberts, 1972

Sanaga pygmy herring
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Thrattidion noctivagus
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Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterígios (peces con aletas radiadas) > Clupeiformes (Herrings) > Clupeidae (Herrings, shads, sardines, menhadens) > Dorosomatinae
Etymology: Thrattidion: Diminutive of Greek, thratta, -es = a kind of fish (Ref. 45335).  More on author: Roberts.

Environment: milieu / climate zone / depth range / distribution range Ecología

; agua dulce pelágico.   Tropical; 6°N - 3°N

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

Africa: endemic to the Sanaga River at Edea, Cameroon (Ref. 188, 28136, 81631).

Tamaño / Peso / Age

Maturity: Lm ?  range ? - ? cm
Max length : 2.1 cm SL macho / no sexado; (Ref. 188)

Short description Morfología | Morfometría

Espinas dorsales (total): 0; Radios blandos dorsales (total): 14-16; Espinas anales 0; Radios blandos anales: 23 - 25. Diagnosis: Thrattidion noctivagus is distinguished from its congeners by the following characters: posterior supra-maxilla absent, belly rounded; prepelvic scutes 4 to 7, with lateral arms, but without keels; pelvic scute with 2 or 3 lateral arms; postpelvic scutes keeled and with arms; lower gillrakers 10 or 11; pelvic insertion well before dorsal fin, with 7 or 8 finrays; anal fin beginning under dorsal fin base (Ref. 188, 81631). The presence of scutes distinguishes it from Congothrissa gossei and the absence of a second supra-maxilla distinguishes it from all other West or central African pellonulines (Ref. 188).

Biología     Glosario (por ej. epibenthic)

Found in rivers, collected only at dusk and dawn in swiftly flowing water of about 1m just above the hydro-electric dam at Edea, Cameroon (Ref. 188). Feeds on plankton and some terrestrial insects (Ref. 188).

Life cycle and mating behavior Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva

Main reference Upload your references | Referencias | Coordinador | Colaboradores

Teugels, G.G., 2007. Clupeidae. p. 186-204. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) The fresh and brackish water fishes of Lower Guinea, West-Central Africa. Volume I. Collection Faune et Flore tropicales 42. Institut de Recherche pour le Développement, Paris, France, Muséum National d’Histoire Naturelle, Paris, France, and Musée Royal de l’Afrique Centrale, Tervuren, Belgium. 800 pp. (Ref. 81631)

IUCN Red List Status (Ref. 120744)

  Data deficient (DD) ; Date assessed: 05 March 2018

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Pesquerías: sin interés
FAO(Publication : search) | FishSource |

Más información

Nombres comunes
Sinónimos
Metabolismo
Despredadores
Ecotoxicología
Reproducción
Madurez
Puesta
Agregación para la puesta
Fecundidad
Huevos
Egg development
Age/Size
Crecimiento
Length-weight
Length-length
Length-frequencies
Morfometría
Morfología
Larva
Dinámica larvaria
Reclutamiento
Abundancia
Referencias
Acuicultura
Perfil de acuicultura
Razas
Genética
Frecuencias de alelos
heritabilidad
Enfermedades
Procesamiento
Mass conversion
Colaboradores
Imágenes
Stamps, Coins Misc.
Sonidos
Ciguatera
Velocidad
Tipo de natación
Superficie branquial
Otolitos
Cerebros
Visión

Herramientas

Special reports

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Fuentes de Internet

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00933 (0.00449 - 0.01939), b=3.05 (2.88 - 3.22), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Nivel trófico (Ref. 69278):  3.3   ±0.42 se; Based on food items.
Resiliencia (Ref. 120179):  Alto, población duplicada en un tiempo mínimo inferior a 15 meses (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low vulnerability (10 of 100) .