Mai-ndombe dwarf sprat (Nannothrissa stewarti)

Scientific name: Nannothrissa stewarti Poll & Roberts, 1976

Mai-ndombe dwarf sprat (Nannothrissa stewarti)

The Mai-ndombe dwarf sprat (Nannothrissa stewarti) is a freshwater fish of the family Clupeidae. Native range: Africa, Lake Mai-ndombe and Inongo near Ipeke, Congo system.

Biology

Dorsal spines (total): 0; Dorsal soft rays (total): 12-18; Anal spines: 0; Anal soft rays: 17 - 19. Body slender or moderate. Scutes (16 to 18 total) a little behind isthmus, very strongly keeled (even at 2.2 cm standard length). Lower jaw very slightly projecting, toothless; no teeth on pre-maxillae or maxillae; second supra-maxilla as deep as maxilla blade and with long slender anterior shaft. Pelvic fin insertion just below dorsal fin origin.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Nannothrissa stewarti
Family
Clupeidae (Herrings, shads and sardines)
Order
Clupeiformes (Herrings)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
2.3
Environment
Freshwater; pelagic
Climate
Tropical
Distribution
Africa: Lake Mai-ndombe and Inongo near Ipeke, Congo system.
Conservation status (IUCN)
Endangered (EN) (B1ab(v))
Threat to humans
Harmless
Uses
Fisheries: subsistence fisheries
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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