Do you know the difference between wild freshwater fish and cultured fish?

First of all, judging from the fish's body shape, the food source of wild fish is unstable, and it is often killed, which requires constant escape and survival, and the amount of exercise will be relatively large, so it is relatively slender. However, because of human intervention, farmed fish have a fixed food source, basically do not kill, and exercise less, so they are short and fat.

From the appearance, most wild fish are high-backed, and some people jokingly call them "humpbacks". Most of the farmed fish are long strips. Their mouths are also very different. The snout of wild fish is longer than the center of eyes, while the lips are white or reddish, and the snout is white. The snout of farmed fish is only as long as the front edge of the orbit, and the lips are black or light black, and the snout color is close to black.

Some people will ask, different fish are different. Here are some common fish as examples.

Like grass carp. The edge of the lower lip of wild grass carp is nearly white or reddish, and the edge of the lower lip of cultured grass carp is bluish gray; The scales of wild grass carp are usually red, while those of cultured grass carp are bluish gray. The pectoral fins and ventral fins of wild grass carp are slightly grayish yellow, the other fins are light gray, and the fins of cultured grass carp are slightly red.

Like carp. The end of the snout near the mouth of wild carp is close to the orbit, while the distance from the end of the whisker to the orbit is only half after breeding carp. The scales of wild carp are yellow, and the cultured carp are blue-gray. Finally, the color of the caudal fin in the second half is obviously different from that of the anal fin. Wild carp is bright orange-red, and cultured carp is dark gray with reddish color.

Finally, talk about bream. The wild bream head is small and flat, with a hook in its mouth, while the cultured bream head is large and round, and the hook in its mouth is not obvious.