Common bleak

Bleak ( Alburnus alburnus )

The bleak ( Alburnus alburnus, formerly also Cyprinus alburnus ), also Ablette, arbor, onion or fish Laugele (Bodensee) called, belongs to the subfamily Alburninae the carp -like fish ( Cyprinidae ). He has a slender body with laterally flattened caudal peduncle. Pergolas are 12 to 15 inches long, rarely up to 25 centimeters. The muzzle is strong upper constant ( the mouth opening is directed steeply upward ). The bleak has pharyngeal teeth, that is, on each pharyngeal sitting two rows of teeth, of which the two outer row and the inner row bears five teeth. The back shows a green-gray or blue- green color, sides and belly have a silver sheen. The fins are slightly darker than the back. The anal fin is located directly below the dorsal fin. The number of scales on the lateral line is 45-54. A special feature of the bleak is that the scales very loosely sitting in the skin and therefore easily lost. In addition, guanine crystals serve to shed the manufacture of pearl essence ( artificial pearls ). The bleak feeds on plankton and insects from the water surface.

Habitat

Pavilions live in larger shoals in lakes and slow flowing waters of the barbel region to the Brachsenregion, but also in the brackish waters of the Baltic Sea are home. They come from the Volga prior to Western Europe, are found in Ireland, Scotland and Scandinavia.

Reproduction

Bowers spawn from April to June in shallow water. Stick the roe of stones, underwater plants, flooded grass and rotting wood.

Other types

Another type is the White bleak ( Alburnus albidus ), the Mediterranean, especially in the Adriatic region, occurs.

Use

As one of the most common white fish the arbor was formerly a popular food fish. He was, for example, in the region of Lake Neusiedl marketed as grilled mackerel as a regional specialty, before it was in the 1970s, replaced by imported mackerel. Because of its many small bones he is hardly eaten in recent times by people who reflect on indigenous cuisine, however, leads to the fact that the arbor was offered in specialty restaurants. The fish is an excellent bait fish when walleye and Rapfenangeln. From the scales of the " silver fish " as the bleak was also called, formerly fish silver was won, among other things, from artificial pearls produce.

Hazardous situation

The World Conservation Union IUCN takes the bleak in the Red List of Threatened Species. However, they judged this way because of its wide distribution and unknown threats than currently not threatened (Least Concern ).