Biology:Bearn beaked dace

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Short description: Species of fish

Bearn beaked dace
Scientific classification edit
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Cypriniformes
Family: Cyprinidae
Subfamily: Leuciscinae
Genus: Leuciscus
Species:
L. bearnensis
Binomial name
Leuciscus bearnensis
(Blanchard, 1866)[2]
Synonyms[3]
  • Squalius bearnensis Blanchard, 1866

The Bearn beaked dace (Leuciscus bearnensis) is a putative species of cyprinid fish, recorded from several localities in the Adour drainage in France .

Description

The Bearn beaked dace is distinguished from other western European members of the genus Leuciscus by having a keel which runs from its nape to the origin of the dorsal fin, a projecting snout which has a rounded tip and a projecting upper jaw, the dorsal profile of head and body shows a distinct hump; the snout is 32-35% of the length of the head; and the lateral line has around 47-52 scales.[2] It also has thick, fleshy lips and a large eye, the diameter of them being approximately a fifth to a quarter of the length of the head. It grows to 280mm in standard length.[4]

Distribution

The Bearn beaked dave occurs only in the drainage basin of the Adour in south-western France[4]

Habitat and ecology

The Bearn beaked dace is found in streams, especially in sections of the streams which have clear water and current with cool, deep pools.[1]

See also

References

  1. 1.0 1.1 Freyhof, J.; Kottelat, M. (2008). "Leuciscus bearnensis". The IUCN Red List of Threatened Species 2008: e.T135602A4158040. doi:10.2305/IUCN.UK.2008.RLTS.T135602A4158040.en. 
  2. 2.0 2.1 Rainer Froese; Daniel Pauly, eds (2017). "Leuciscus bearnensis (Blanchard, 1866) Bearn beaked dace". Fishbase. http://www.fishbase.org/Summary/SpeciesSummary.php?ID=65123&AT=Bearn+beaked+dace. Retrieved 14 November 2007. 
  3. "Synonyms of Leuciscus bearnensis (Blanchard, 1866)". Fishbase. http://www.fishbase.org/Nomenclature/SynonymsList.php?ID=65123&SynCode=163132&GenusName=Leuciscus&SpeciesName=bearnensis. Retrieved 14 November 2017. 
  4. 4.0 4.1 Jörg Freyhof; Maurice Kottelat (2007). Handbook of European freshwater fishes. Maurice Kottelat (privately published). p. 205. ISBN 2839902982. 

Wikidata ☰ Q4876756 entry