Common Roach のバックアップ(No.4)

Common Roach

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English
The Common Roach is as genus of the Cyprinidae family. It is widespread in fresh and brackish water bodies in Europe and Northern Asia. It lives in Siverian rivers and lake, in the basins of the Caspian Sea and the Aral Sea. There are numerouns subsoecies of roach, differing in their life cycle, amoung which there are non-migrating forms(common roach and Rutilus rutilus lacustris, known in Russian as Siberian roach) as well as semi-diadromous ones (e.g. taran and vobla). Common roach occurs in smakk rivers and brooks as well as in big rivers, lakes and reservoirs. It prefers war, and quiet water bodies with sandy bottoms and aquatic plants. Common roach lives in smakk shoals. Roach's body is elongatesd and moderately flattened along flanks. Its grayish black dorsal surface shimmers with blues and green tinge, the rest of the body is silvery white. The scales are big and tightly embedded. Dorsal and caidal fins are greenish gray with shade of red, pelvic and anal fins are red. Roach can be recognized by its eye as there is a characteristic red spot in the upper part of its iris. Its pharyngeal teeth form one row.Common roach reaches the length of 30cm.

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