Chondrostoma scodrense

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Chondrostoma scodrense
Systematics
without rank: Otophysa
Order : Carp-like (Cypriniformes)
Subordination : Carp fish-like (Cyprinoidei)
Family : White fish (Leuciscidae)
Genre : Chondrostoma
Type : Chondrostoma scodrense
Scientific name
Chondrostoma scodrense
Elvira , 1987

Chondrostoma scodrense is a supposedly extinct species of fish from the genus Chondrostoma within the carp family . The occurrence was limited to Montenegro and Albania .

features

Chondrostoma scodrense reached a standard length of 135 mm. The mouth was slightly curved with a thin but well-developed horny layer on the lower lip. There were 51 to 59 scales on the lateral line organ . The anal and dorsal fins were slightly arched on the outer line. The number of rays in the back was eight to nine, the number of rays of the anal fin nine to ten, and the number of rays of the ventral fin eight. The pectoral fins had 15 to 18 rays. There were 14 to 17 gill traps.

Occurrence

Chondrostoma scodrense was endemic to Lake Skadar on the border between Montenegro and Albania .

Habitat and way of life

There is no reliable field data about lifestyle and habitat. Comparisons with its closest relative, the nose ( Chondrostoma nasus ), however, lead to the assumption that it migrated to the Rijeka Crnojevica , a tributary of Lake Skadar, and spawned there in spring.

status

Chondrostoma scodrense was declared extinct by the IUCN in 2006 , as this species is only known from nine museum specimens that Franz Steindachner collected between August and September 1881. Despite intensive searches in the 1980s, 1990s and 2003, the taxon was not found again. Possible causes for the species' disappearance were overfishing, water pollution and habitat loss. Steindachner's collection is kept in the Natural History Museum Vienna .

literature

  • Maurice Kottelat & Jörg Freyhof: Handbook of European Freshwater Fishes . 2007, ISBN 978-2-8399-0298-4 .
  • Benigno Elvira & Ana Almodóvar: Threatened fishes of the world: Chondrostoma scodrense Elvira, 1987 (Cyprinidae) In: Environmental Biology of Fishes Edition 81, number 1 / January 2008
  • Benigno Elvira: A taxonomic revision of the genus Chondrostoma Agassiz, 1835 (Pisces, Cyprinidae) Cybium 11, 1987: p. 111-140.

Web links