Why is my puffer doing this??!?!?!

[fishykid9212]

I have a porcupine puffer and he is getting very skinny. When I put food in the tank, he goes over towards it takes it then spits it out. I have tried jumbo pellets and shrimp, is he fussy or is there something wrong? thanks

 

[mflamb]

You might try asking over in the fish forum.