I bought a male betta fish three months ago, and he was healthy up until last week. He started becoming lethargic, either lying at the bottom of his tank or suspending himself vertically in the water. My fish started eating less until he stopped eating altogether for a day or so. I also noticed that he was breathing through his mouth. I tried changing the water twice, but I might have made the situation worse because of the fluctuation in water temperature.
I have fed him pellets and peas sparingly for the past two days, and I have noticed a little more activity. However, there seems to be very little feces in his tank. Is it possible that he has swim bladder or constipation? Or is it a parasite? I can't seem to tell. If it is a parasite, I would like to get him medication, but I don't know what kind would be best.
I am completely new to the fish world, and do not know what to do. Please help!
I have fed him pellets and peas sparingly for the past two days, and I have noticed a little more activity. However, there seems to be very little feces in his tank. Is it possible that he has swim bladder or constipation? Or is it a parasite? I can't seem to tell. If it is a parasite, I would like to get him medication, but I don't know what kind would be best.
I am completely new to the fish world, and do not know what to do. Please help!