parasites in betta

I have a female Betta Splenders, she has bright colors, no issues swimming but she has a really bad growth on a side of the belly. We quarantened her in a 5L tank to check how her feces were and to make her and other fishes safe. At the beginning she had stringy poop and we (my bf and I) thought...

Hello, can someone please help me? I bought this adorable, little cutie pie, 3 days ago from PetSmart, and my little water warrior is sick. On his ride to his new home I thought he died!! He definitely has swim bladder disease, but I’m starting to think it’s caused by something else. He has a...