Dean is in a shared 3foot tank with Sammy, and today was their water change day. I did it like I usually did, and everything seemed fine.
Dean was swimming around like usual, even after the water change, however it's been about two hours, and he is floating on his side at the top of the tank. When he saw me, he swam normally, then when he stopped he went to his side again.
He does seem to have a bit of a pot belly so to speak, but can it develop that quickly, even if I didn't feed him today? I'm rather worried now. Last night they were given a tiny bit of frozen blood worms (i think?) by my brother as a treat, and Sammy & Castiel are fine. So does it sound like SBD? Should I separate him and Sammy just incase?