Oxynoemacheilus bureschi
| Oxynoemacheilus bureschi | ||||||||||||
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| Scientific name | ||||||||||||
| Oxynoemacheilus bureschi | ||||||||||||
| ( Drensky , 1928) |
Oxynoemacheilus bureschi is a benthic freshwater fish species of the genus Oxynoemacheilus from the family of the brook loach (Nemacheilidae). The species was described in 1928 and is found in North Macedonia , Greece and Bulgaria . It was named after the Bulgarian zoologist Ivan Buresch .
features
Like all species of the genus Oxynoemacheilus , the animals have an elongated, slender body with a gray-yellow basic color and irregular spots along the body flanks. The mouth is below and surrounded by 6 barbels . The caudal fin is forked in Oxynoemacheilus bureschi in contrast to some other species of this genus. The tail stalk is 1.9-2.3 times as long as it is wide. The eye diameter is 21–26% of the length of the head and is therefore relatively larger than that of the other European species. The males have an under-eye lobe that is absent in other European species of the genus. Furthermore, the species has a dentiform process, which can also be absent in other species in Europe. The animals reach a standard length of up to 6.5 cm.
Distribution and ecology
Oxynoemacheilus bureschi occurs in the catchment areas of the Struma , the Vardar and the Nestos , which drain into the Aegean Sea . They live in rivers with a gravelly or stony substrate and often hang out in rapids . There the benthic animals use their barbels to search the ground for invertebrates on which they feed. The spawning season falls in June.
Danger
The species is classified as " Least Concern " ( LC = Least Concern ) by the IUCN . Canals, anthropogenic changes in river morphology, water abstraction, pollution and the construction of dams are named as hazards. However, there is hardly any data available on population sizes of this species.
swell
- ↑ Maurice Kottelat, Jörg Freyhof: Handbook of European Freshwater Fishes . Kottelat, Cornol, Berlin 2007.
- ↑ Oxynoemacheilus bureschi summary page. Retrieved March 2, 2019 .
- ^ The IUCN Red List of Threatened Species. Retrieved March 2, 2019 .