Karaś srebrzysty-(Carassius gibelio)- Prussian carp

Karaś srebrzysty-(Carassius gibelio)- Prussian carp – słodkowodna ryba z rodziny karpiowatych (Cyprinidae). Nazywany jest również japończykiem, ze względu na pierwotne siedlisko.

Występowanie: środkowa i wschodnia Europa. Zlewiska: Morze Czarne, Morze Kaspijskie, Jezioro Aralskie i Morze Azowskie. Syberia i dorzecze Amuru.

Biotop: Śródlądowe wody słodkie.
Nie pos
iada okresu i wymiaru ochronnego, nie jest limitowany wagowo

Karaś srebrzysty-(Carassius gibelio)- Prussian carp

Karaś

 

 

 

 

 

 

 

Karaś srebrzysty-(Carassius gibelio)- Prussian carp

Opis

Rekord Polski – 3,40 kg
Złoty medal – 2,00 kg
Srebrny medal – 1,50 kg
Brazowy medal – 1,20 kg

Z wyglądu bardzo podobny do karasia pospolitego. Grzbiet stalowogranatowy, boki srebrzyste. Inne widoczne zewnętrzne różnice polegają na tym, że jest trochę grubszy i mniej wygrzbiecony. Górna krawędź płetwy grzbietowej jest nieco wklęsła. Ostatnie, twarde promienie płetwy grzbietowej i odbytowej są bardzo grubo piłkowane. Gatunkiem autochtonicznym jest jedynie w dorzeczu Amuru. Wszędzie, gdzie występuje poza tym obszarem został zaaklimatyzowany.

Rozmiary
Długość ciała przeciętnie do 15 – 35 cm
Masa ciała przeciętnie 1,5 kg
wg/wikipedia


 

Karaś srebrzysty-(Carassius gibelio)- Prussian carp

Crucian carp The Crucian Carp (Carassius carassius) is a member of the family Cyprinidae, which includes many other fish such as the common carp, or the smaller minnows. They inhabit lakes, ponds, and slow-moving rivers throughout Europe and Asia. The crucian is a medium-sized cyprinid, which rarely exceeds a weight of over 3.3 pounds (1.5 kg). They usually have a dark green back, golden sides, and reddish fins, although other colour variations exist. It is known for its ability to survive without oxygen (up to 5.5 months in winter).

They are often caught as a sport fish: the British rod-caught record for largest crucian is four pounds, nine ounces, caught by Martin Bowler in a lake in southern England in 2003. There have been various bids for a breakage of this record since, but they have been passed off as the specimens have not been said to have been „true” crucians, but hybrids between the carp and one of its relatives, such as the goldfish, which are not native to the British Isles. These hybrids often exhibit hybrid vigour or heterosis, being much more adept at finding food and evading predators than either of their parents, and thus pose somewhat of a threat to the native carp population, and to other native aquatic animals.

Karaś srebrzysty-(Carassius gibelio)- Prussian carp

These carp are also occasionally kept as freshwater aquarium fish, as well as in water gardens, although they are not commonly available commercially, mainly because they are not in particularly high demand due to the presence of more colourful fish such as the koi or orfe.

The shape of a Crucian carp can be very high. The fish get an almost perfect disc shape with well rounded fins. If no predators like pike or perch are present, the Crucian carp will grow in length rather then height and the fish will be more slender looking. The growth in height will make it difficult for predators to swallow the crucian carp.

Many sources will claim that crucian carp are the wild version of the goldfish Carassius auratus auratus). The wild form of the goldfish is however Carassius auratus gibelio, or rather Carassius gibelio with auratus as the subscpecies. While they are certainly closely related, they are different species which can be indentified by the following characteristics:

by:Wikipedia

 

Więcej w dziale Encyklopedia na ZPW

 

Karaś złocisty (carassius carassius)Crucian Carp

 

Krąp – (Blicca bjoerkna) – Carp bream

 

 

 

 


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