why do koi jump out of the water
There are several reasons why koi jump out of the water. One of the most common is parasites. The parasites cause itching and pain. The fish will leap out of the water and also rub on things in the pond in an attempt to escape the itching. If your koi have parasites, you can treat with a medication called praziquantel. It is sold on pet stores and pond supply stores. Koi also will do a lot of leaping out of the water when they are spawning. Lot of chasing goes on. The females may get tired of it and leap out. Males trying to win the females may also jump. Finally, they may jump out because they are scared.