Hello I bought a Betta male in december last year for my 3 yr old daughter. I did a water change one afternoon because it was time and the next day I had to work which im gone 24 hrs at a time. When i got home from work I noticed my fish well her fish was floating to the top and just leaning on the glass bowl we have. The fish are fine 3 pellets. Later that afternoon I had a talk with my little girl telling her that the fish might be going to swim with his parents in the ocean. I decided to put the betta in a different bowl and really clean his home. So I made up some new water let it sit about 2 hrs put him in it and wham like a new fish he was doing better right away. Later that night his tank was ready so he was put back in it and as far as I know since im at work today he is doing just fine.
Its a 1 gal bowl 1 fake plant no heater and I dont check water stats. My house temp stays at about 70 deg. He is a very active fish. I was just wondering if this has happened to anyone and what might it have been. I did notice a film on top of the water and sometimes his water gets cloudy.