Why do I have fish that jump out of the tank?

I have a bit of personal insight here, hope you can be useful

1, some species of fish, like to jump. Such as koi, red arrows in tropical fish, clouded swallows, lippies and so on.

Keeping these fish, you need to have blocking nets and other sheltering equipment, otherwise, jumping out of the tank, is a matter of time.

2, the fish jumped out of the tank, usually have:

Scared, such as the tank was shaken; near the sound of a loud noise; change the water to fish, and so on.

The weather is hot and muggy, the fish lack of oxygen.

Disease attack, the fish is not feeling well.

Mixed fish, there are ferocious type of fish that like to bite other fish fins and tails. Such as certain species of scavengers, small sharks, etc.

3, the solution:

Goldfish basically will not jump out of the tank, you can choose to keep goldfish.

Keep other kinds of fish, to buy a few books to understand their basic life characteristics. Distinguish whether it is suitable for mixed culture, whether it is easy to jump tank, and then, in terms of species matching, equipment configuration, etc., make the right choice.

Improve oxygen supply conditions and enhance fish keeping skills.