Rhone streber (Zingel asper)

Scientific name: Zingel asper Linnaeus, 1758

The Rhone streber (Zingel asper) is a freshwater fish of the family Percidae.

Biology

Dorsal spines (total): 8 - 13; Dorsal soft rays (total): 10-14; Anal spines: 1 - 3; Anal soft rays: 8 - 12; Vertebrae: 43 - 45. The presence of 57-65 + 3-6 scales along lateral line distinguishes uniquely this species from its congeners. Can be further separated from other species by the combination of the following characters: first dorsal fin with 8-9 spines; second dorsal fin with 1-2 simple and 9-12? branched rays; scaleless cheeks. Caudal fin with 17 soft rays.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Zingel asper
Family
Percidae (Perches)
Order
Perciformes (Perch-like fish)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
22.0
Environment
Freshwater; demersal
Climate
Temperate
Distribution
Europe: Rh?ne drainage, except Lake Geneva basin (France, Switzerland). Originaly widespread, but following habitat alterations, distribution is now much fragmented and restricted. Main subsisting populations in the middle Doubs (France, Switzerland) and Durance and Ardeche (southern France).
Conservation status (IUCN)
Critically Endangered (CR) (B2ab(iii))
Threat to humans
Harmless
Uses
Fisheries: of no interest
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (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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