Yesterday I got a baby betta from petco. He/she is living in a three gallon tank with a heater, two plants and a cave. He was very active and swimming happily around the aquarium yesterday. I fed him crushed pellets. He always swam in a weird way though. Today I woke up and found him floating at the top in a weird way and then sinking to the bottom. He is having a really hard time swimming right now. I think he has swim bladder disease. I put some aquarium salt in and Im not going to feed him for a day or two. Should I put him back in the cup he came in and float it in the tank so he does not have a hard time getting air? What should I do?
when i first got him
today this is what he looked like