Vimba vimba

Pickerel ( Vimba vimba )

The Pickerel ( Vimba vimba ), also called Rußnase, is an indigenous schooling fish, which belongs within the carp family (Cyprinidae ) to the genus Vimba.

Features

The slim, used as a food fish fish is about 20 to 35 cm, more rarely, to 50 cm long, 5 to 10 cm high and weighs 700-1000 g, and it has an elongated, laterally slightly flattened body. The head is elongated nose tip -like and wearing a black color, which gives the fish the colloquial name Rußnase.

The mouth of the Pickerel is horseshoe-shaped bent and inferior, the lower lip is constructed without a horn rims and the pharyngeal teeth are uniseriate. The eyes are relatively large. The dorsal fin is 11 - or 12 -beam, 3 of which jets are formed as a sting, and the anal fin 19 - to 25 -beam including 3 spines. The strongly concave caudal fin is 19 -beam. Characteristic of this fish are the sharp keel shed behind the dorsal fin. Along the sidelines, he has about 53 to 61 scales.

The back of the Pickerel is dark gray to bluish, while the flanks are lighter and usually tinged reddish and shining silver. The belly is orange to silver white. Thoracic, abdominal and anal fins are yellowish with reddish tinted base.

Occurrence

The Pickerel live in groups - in part as a stand, partly as a migrant form - especially at the basic slow-flowing lower reaches of the major rivers that flow into the North Sea, the Baltic, Black and Caspian Sea. In the north they are common to southern Finland and southern Sweden, in Denmark it is missing. Occasionally it occurs in brackish waters.

Nutrition

In the quiet lakeside area they are looking for food, this consists mainly of insect larvae and other small animals, such as clams, worms and snails. But even plant food is taken.

Reproduction

In the spawning season, from mid-April to late July, the vimba undertake a spawning migration upstream to the barbel region. Meanwhile discolor the males - they have a black head and a black to the sidelines body top. The belly is orange to red to aimed towards the mouth. Thoracic, abdominal and anal fins also light orange to reddish, while the dorsal and caudal fins black then change color to blue- black.

In shallow gravelly or plant- rich shore areas vimba spawn. Oviposition takes place mostly at night and from time to time, be a total 80000-300000 sticky eggs of ø 1.4 mm deposited on sandy or gravelly substrate where they adhere. After the male has inseminated the spawning, the vimba are returning to their ancestral home waters. The larvae also live on the ground.

Threats and conservation

According to IUCN, the International Pickerel is " not at risk " is run as.

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