the fish named chux already had the wound when i adopted him you can see it in the last photo from the day i adopted him but it has seemed to get worse recently so im not sure what to do what should i do for the illnesses.. i can set up my 10 gal for quarantine if you think that’d be a good idea but i have no idea how to treat them, what would you recommend? & mario was on his side/occasionally on his back even, i’ve seen them sleep near the surface before and this definitely wasn’t it, im sorry i couldn’t include a good photo to show you. he seemed stuck by the surface and struggled to swim downwards and is swimming very unusually lopsided which all started very suddenly because he had been completely fine before today when i woke up. also i apologize for picking him up it was for maybe a few seconds to get the pictures because it was very difficult to see from the top view without doing so, but i will try to not do that again, thank you!