① The pattern on the belly of wild snakehead is yellow and its back is black and shiny, while the pattern on the belly of domestic snakehead is gray and its back is dark. So just look at the depth of the color and you will know whether the snakehead is wild or not.

② In addition, the wild snakehead is slender, while the snakehead raised in fish ponds is fat and wide.

Extended data

Snakehead is the common name of snakehead [lǐ], also known as snakehead, raw fish, caiyu, snake fish, and salamander.

Snakehead is fierce, fertile and has a huge appetite. It can often eat all other fish in a lake or pond.

Snakehead can also slide on land and migrate to other waters to find food, and can live out of water for 3 days.

As early as 2000 years ago, it was listed as the top grade of insect fish by Shennong Herbal Classic, together with honey, bee, beeswax (propolis), oyster, tortoise shell, mulberry tick, clam, clam and carp.

Black snakehead is a common edible fish in China, with large size, fast growth and high economic value.

Snakehead has less bone spurs, high meat content and rich nutrition, which is higher than protein contained in chicken and beef. As a medicine, snakehead has the effects of removing blood stasis, promoting tissue regeneration, nourishing and recuperating.

After surgery, eating snakehead has the functions of promoting granulation, enriching blood and promoting wound healing, and has very rich nutritional value.