Sucker fish problems
I'm in desperate need of help! I have a 20 gallon tank with a whisper ex30 filter and I'm feeding my fish waddled advanced nut. Tropical flakes. I have 6 guppies in with my sucker fish and today when I came home he was upside down on the bottom of the tank. I thought he was dead but when I put my net down to catch him he started moving but fell back down to the bottom. I thought he was okay until he started swimming irratically around the tank, hit the side of the tank, and fell back down on his back.
I'm working on quarantining him right now, and I just got him yesterday from petco so I'm hoping he didn't bring anything into my tank. He seemed healthy and strong when I picked him out but now he is having problems. He's laying on his back, but still breathing. Any kind of meds I should get for him? Anyone have this experience before? All other fish I've had for a couple months and are healthy and expressive. My dad took my testing kit so Im not sure what the levels are right now but I tested it 3 days ago and everything was normal.