1, wild crucian carp, the overall color is white, if viewed from the side in water or in the light, it has yellowish color. The cultured crucian carp is gray-black, and the color of pure culture is dark. Wild crucian carp, with white body color and high back. Wild crucian carp is slender and yellowish in color.

2, wild crucian carp, thin body, relatively high back, the so-called high back. The cultured crucian carp is fat and has a large and soft abdomen. The cultured crucian carp is black. The cultured crucian carp is black and flat-backed.

3. There is also a kind of crucian carp that is cultured in Datang or reservoir, which is between wild and cultured. Although the color is a little white, but the figure is relatively fat, the back is relatively smooth. Semi-cultured crucian carp has a flat back and a large abdomen.

Extended data:

Appearance characteristics

Carassius auratus is flat and tall, small in size, dull in back and pale in abdomen, but it also shows different body colors due to different fish producing areas, but most of them are black and have metallic luster. You don't need to put it in your mouth. Small in scale.

The body color of crucian carp is mainly gray, such as gray-black back, silver-gray belly and gray-white fins.

Carassius auratus is widely distributed all over the country (except the western plateau), inhabiting lakes, rivers, canals and swamps, especially shallow lakes and ponds where aquatic plants are flourishing. It has strong reproductive ability and is a fish with strong adaptability. It is also an excellent cultured fish and economic fish in China. The waters all over the country are produced all the year round.

Baidu encyclopedia-crucian carp (bony fish)