ok. first things first. can you attach a photo of your lottl? what do you feed him and how often? what are your water perameters? any floating or pooping? any broken bones? for now tub him and do daily declorinated water changes.
So Friday night/sat morning I think it was she had a worm. I seen sick in the tank and a few hours she's floating on her side with bloat.
Added her to the tub with prime and water.
Sunday morning there was some sick in her tub still on her side.
Monday she went to the vet had an x-ray they found has some where in her not the stomach but an empty space. The vet drained it she was still a bit floaty but not as bad and not as bloated after they took it out.
Fast forward to night gave her anti biotics and anti inflammatories headed to bed woke up she's all swollen again. Back to the vet today they took the gas out she was perfect gave her the medication tonighr and she's swollen back up again 20mins after the meds.
Vet said she has a worm in her stomach that might be causing a blockage and hopefully she poos it out and that could be causing an infection. I'm thinking it could be something else
pH 7.2
Nitrite 0
Ammonia 0
Nitrate 15
Temp 18 degress at the highest.