got a FHxBP from air cargo. fish is floating upside down and barely breathing at all. water temp was at 50f, now at 54f. how fast can i raise the temp. theres still hope. please give me some advise.
Squeeze some canned peas into his tank. Offer him nothing else for a week. It will (hopefully) cure his swim-bladder problem. He could just be disoriented, but the peas will do no harm at all. Did you buy him from a vendor or not related to MFK? You can PM me if you do not want to put them on blast, or not tell me at all. Just curious on that one. Best of luck.
By now he should be in 75-80F water if you've had him for over 3 hours. If it isnt temperature related and she is still floating upside down, follow the pea method and do not feed anything for akt least a few days.