What's wrong with the rumbling of the colors

Persons are sparsely caused by food and drinking water, or stress reactions.For the deterioration of food and drinking water, you need to replace it regularly. At the same time, clean the tanks. The water that it is fed should not be placed for too long.In response to stress reactions, the best way is to recover. You can cover it with a cage cloth, so that it can slowly adapt to the environment, and it will not be thinner after adaptation.