I have a betta that is about 4 or 5 years old maybe pushing 6 yrs, it is in a 1.5 gallon tank with a heater but no Filter( it kicks it over constantly so I gave up) and in dec I add live plants to the tank, shortly after it started having trouble swimming to the top refused to eat, I have removed plants and it still can't seem to stay afloat, no appetite hides in a corner of the tank. I have been about 3 months now and I have read about swim bladder which it does sound like but can't make it eat a pea, any ideas on other things I can do for it?