Sanaga pygmy herring (Thrattidion noctivagus)

Scientific name: Thrattidion noctivagus Roberts, 1972

Sanaga pygmy herring (Thrattidion noctivagus)

The Sanaga pygmy herring (Thrattidion noctivagus) is a freshwater fish of the family Clupeidae. Native range: Africa, Endemic to the Sanaga River at Edea, Cameroon.

Biology

Dorsal spines (total): 0; Dorsal soft rays (total): 12-18; Anal spines: 0; Anal soft rays: 23 - 25. Perhaps not much over 2 cm standard length. Pre-pelvic scutes 4 to 7, with lateral arms, but no keels; pelvic scute with 2 or 3 lateral arms; post-pelvic scutes keeled and with arms; anal fin starts under dorsal fin base. The presence of scutes distinguishes it from Congothrissa gossei; from all other West or central African pellonulines by the absence of a second supra-maxilla.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Thrattidion noctivagus
Family
Clupeidae (Herrings, shads and sardines)
Order
Clupeiformes (Herrings)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
2.1
Environment
Freshwater; pelagic
Climate
Tropical
Distribution
Africa: Endemic to the Sanaga River at Edea, Cameroon.
Conservation status (IUCN)
Data deficient (DD)
Threat to humans
Harmless
Uses
Fisheries: of no interest
Resilience
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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