Let's start with the swim bladder most case of swim bladder are cause by over feeding and the stomach putting pressure on the swim bladder constipation or bacterial infection of the swim bladder and injury to the swim bladder Frist I would recommend fasting your fish for a couple of days and doing epsom salt baths 1 table spoon for 2 gallons for no more than 15 minutes 2-3 times a day as eposm salt acts as a muscle relaxants to help with constipation if that has no effect then I would treat with antibiotic medication in food Kanaplex is my go to antibiotic treatment you could also use maracyn2 and furan2 are not very effective at a higher pH above 7.8 if your in the UK I would treat with Sera baktopur direct tables if it's a damage swim bladder caused by an injury it case of wait and see some will improve given time other will not improve and may have to be euthanize if you think there suffering clove oil is one of the most humane ways to euthanize your fish