Friends who like to fish know that if you want to catch a very heavy mackerel, you have to use a snail as bait, the main reason is that the mackerel very much like to eat snails, so people also call the mackerel snail mackerel. Speaking of screws, I believe that all of us should not be unfamiliar with the snail has a very hard shell, many people are curious about how the mackerel eat the snail, when eating it is swallowed whole or spit out the shell of the snail.

The mackerel is one of the four big fish, because the mackerel's whole body looks greenish-black, so it is named mackerel, mackerel's meat is also more tender and tasty, so the mackerel is ranked in the first of the four big fish. Mackerel not only like to eat snails, but also like to eat mussels, river shrimp, small crabs and other animals, and grass carp is different, mackerel is a kind of carnivore, mackerel is also divided into four steps when eating snails, which are sucking, biting, swallowing and spitting.

The mackerel's suction ability is very strong, and it can easily suck snails and other food into its mouth. After sucking into its mouth, the mackerel uses its well-developed pharyngeal teeth to grind the hard shells of snails and shellfish, which makes it easier to eat. Then the mackerel spits out the crushed food, the main purpose of the mackerel to spit out the food is to filter out the crushed shells, and finally the mackerel will eat the flesh of the screws and shells.

Not only does the cyprinid like to eat some of the mollusks in the water, but the carp also likes to eat, but the carp does not have the hard pharyngeal teeth like the cyprinid, and is unable to grind the hard shells of these foods when eating. So when the cyprinids spit out this food, it will also be secretly eaten by some other fish. Although the mackerel is a carnivore, it is not aggressive and will not attack other fish when it sees them grabbing their food. The hardness of the pharyngeal teeth of cyprinids of different ages is also different, there are some larger cyprinids, their pharyngeal teeth are very strong, especially like to eat mollusks like snails.