Catfish is a relatively common fish, which is distributed all over China, and it is a relatively famous food, and its taste is relatively good. But some people think that catfish is very dirty, and even call them "the dirtiest fish in the world". The main reason is the dirty living environment of catfish. The survival ability of catfish is very strong, they do not have high requirements for the surrounding environment, can live in a very harsh environment, even in a very dirty and messy environment, catfish can grow, even in the foul ditch can grow. Another reason is that catfish may eat dirty food, rotten food and even garbage.
Moreover, from the appearance, catfish belongs to scaleless fish, the surface of the body will have some mucus, looks dirty. These reasons are all important reasons for their dirty. However, these days many catfish are raised in captivity, they live in relatively clean water, the breeders do a good job of changing the water regularly, and they eat normal food, not scavenging or garbage, these catfish are not dirty.
The reasons why catfish are dirty have been introduced above, and catfish have a nickname called "garbage fish", which is basically the same as the reasons why they are dirty. First of all, because of their living environment, many catfish live in a very bad environment, the water quality is very dirty, almost can be said to live in the garbage dump, which is one of the important reasons why they are called garbage fish. Another important reason is the food of catfish, catfish is not picky about food, very dirty food can be eaten, will eat rotten food or even garbage, which is one of the reasons why they are called garbage fish. Because they eat everything, some catfish are over the limit when monitored for heavy metals.
