Crucian Carp のバックアップ(No.4)

Crucian Carp

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English
The Crucian Carp is a fish of the Cyprininae subdivision of the cyprinid family (or carps). It is a valuable game fish.
Its native range includes Central and Eastern Europe and Siberia (up to the Lena). Crucian carp lives in overgrown water bodies turning into marshes, in lakes on floodplains. It seldom occurs in rivers as it prefers areas with slower currents. It chooses silted ground, where they can bury themselves when the water body freezes or dries out. They can immerse in silt as deep as 70 cm. In adverse conditions (excessive bogginess, scarcity of food) they mutate into a slowly growing large-headed dwarfish form. In favorable conditions they grow well, it is bred in ponds, to which carp can't adjust. Adult crucian carp feed on plants, insect larvae, worms and other invertebrates. Visually is distinguished from gibel carp only by its coloration and smaller scales. Its body is high, moderately flattened along flanks, with a thick back. The back is dark brown or brown with a greenish shimmer, its flanks are dark goldish, sometimes with a copper shimmer. Paired fins are slightly reddish. There are no barbels on its mouth. It has one row of pharyngeal teeth. Crucian carp reaches the length of 45 cm and a weight exceeding 3 kg. However, specimens weighting from 500 to 600 g are considered as decent fish.

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