White fin gudgeon
| White fin gudgeon | ||||||||||||
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White fin gudgeon ( Romanogobio albipinnatus ) |
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| Romanogobio albipinnatus | ||||||||||||
| ( Lukasch , 1933) |
The white-fin gudgeon ( Romanogobio albipinnatus ) is a freshwater fish from the order of the carp-like (Cypriniformes).
features
The white-fin gudgeon has a typical, elongated and slightly flattened gudgeon shape and is 8 to 10, at most 13 cm long. The head is relatively long, the mouth below. The large eyes have a diameter that is at least as large as their distance from one another. The barbels are long and reach the back of the eyes. The scales are relatively large. The tail fin stalk is short and high.
- Fin formula : dorsal 3 / 7½, anal 2–3 / 6½
- Scale formula : 39–43 / 4 / 14–16
The throat region is usually scaly.
The white-finned gudgeon is above the top and bottom dark limited lateral line greenish or brown with a dark spot row just above the sidelines, and stained below bright. The white-fin gudgeon is easy to distinguish from the gudgeon ( Gobio gobio ) due to the transparent, spotless dorsal and caudal fin .
distribution and habitat
The distribution area includes Southeast and Eastern Europe. The white-finned green-finned green-finfish is at home there in the middle and lower reaches of larger rivers and streams. It prefers calm flowing waters with a sandy bottom. The rivers in which the fish occurs are in the northern catchment area of the Caspian Sea . These include the Volga and the Urals .
Way of life
The white-fin gudgeon is a nocturnal bottom fish that lives sociable in small groups and feeds on small invertebrates, bottom-dwelling animals, algae and diatoms . It spawns from May to June. Little research has been done into its biology. It is locally endangered due to water pollution and river straightening.
protection
The white fin gudgeon is listed by the European Union in Appendix II of the Habitats Directive and is therefore considered a type of community interest, for whose conservation special protected areas must be designated by the member states.
literature
- Fritz Terofal: Steinbach's natural guide, freshwater fish. Ulmer, Stuttgart 2003, ISBN 3-8001-4296-1
- ↑ White fin gudgeon on Fishbase.org (English)
Web links
- White-finned gudgeon on Fishbase.org (English)
- Romanogobio albipinnatus inthe IUCN 2013 Red List of Threatened Species . Posted by: Freyhof, J. & Kottelat, M., 2008. Retrieved September 7, 2013.