Catfish is a common freshwater fish, living in the bottom of the water. There are wild catfish and farmed catfish. Among them, farmed catfish generally can not grow very large, because they can not continue to grow after a few years of farming, may be sold in the market. Therefore, the weight of this catfish is generally not more than 10 kilograms. Catfish, which live in rivers, lakes and other waters, can grow larger because they can continue to grow. They can grow to a very large size if they are not affected by human factors. "Mekong giant catfish" is a very large catfish species, weighing more than 200 kilograms.
But even in the wild, not all catfish can grow to this size. For example, if living in an unsuitable environment, catfish will be smaller and can not grow too big. For example, catfish contain many different species, some of which are relatively small in size, and their length is even less than 10 centimeters.
In order to reproduce catfish, two basic conditions need to be met. One of the conditions is age, and catfish can only reproduce after they reach the age of physical maturity. Under normal circumstances, catfish in the 2-year-old after they have the ability to reproduce, in the fish catfish is a relatively early varieties. In addition to age conditions, there is a basic condition is the environmental conditions, catfish is not at all times can reproduce, but only when the water temperature is suitable to reproduce, water temperature at least 18 degrees can be.
