Why do pond fish slant sideways?

Question

this one fish turns on its side and floats. It's an out door fresh water pond, and we live in the tropics. After a while, the fish straightens itself and swims. Our gardener reckons its ill.... can someone please advice me. Thanks.

Answer 1

it has swim bladder disease cook peas then peel them then mush them and finally feed them to the fishes.

Answer 2

I had the same problem with my fish. I took a risk and did an experiment on them. I isolated the sick fish in a large container and added 1/4 teaspoon salt to the water. After 10 - 15 minutes I returned the fish to the pond. It seemed to work. But this is only a suggestion.

Answer 3

it may have swim bladder disease