CATDOLL : CATDOLL: What's the matter with Koi floating on the surface?

What's the matter with Koi floating head?

Fish float because of lack of oxygen. Water plants take oxygen away from fishes during photosynthesis. Three days is best. If you change the water frequently, change one-fifth of the water each time and let it air dry for a day. Koi's filtration system cannot blow oxygen bubbles, which can easily cause skin diseases. Do not leave any food. Keep as little space as possible.

What is the disease of Koi floating head and what medicine should be used?

The density is definitely too high. The floating head is caused by lack of oxygen. Buy an air pump or reduce the number of fish. 40 is enough. It is easy to die when crowded, and the water quality is not easy to control. If the tail is rotten, add some Daqing, oxytetracycline, and large-grain salt. The main reason is that the density is too high.