My mbu is always on bottom also. So how did you get yours to move again? Mine is in a 125 long with some other fish that mainly hide. He is very docile. He eats 2x a day sometimes but not a lot at once. A couple of live small snails in am and at night 1/2 shell clams about 3 to 4. He seems happy but like I said just hangs out in the corner. I have 2 medium clown loaches that hide except at night and 3 small tetras and 3 tiny green cories plus a morymid dolphin fish that always hides - I have a lot of hiding spaces for those fish. They are out at night when mbu is sleeping. I have well water which may upset them but all my fish have to deal with this. He is always happy to see me he does move a little when he sees me and when he eats but other than that he is a couch potato. Nothing like what I see other mbus on youtube. Thanks for any replies.
How long have you had your puffer??? And how big is he???