i have a green spotted puffer, tequila. and as all puffers go- he is a piggy-piggy-pig! (but my columbian shark keeps up w/ him- its like an eating contest on feeding days) for his diet i have live snails, ghost shrimp, bloodworms, and plankton. he doesnt like the brine shrimp, go figure- he wants the fatty foods. and im going to be trying fresh clams in the half shell, theyre good to keep the beak worn, plus puffers love clams. i also want to try flakes at some point, ive heard that some puffers will eat them, though i doubt mine will. he doesnt eat the sinking shrimp pellets (broken up real small for him) or the 'spectrum' that the lfs
told me he ate. and yes, while hes eating his fat tummy expands and makes him look that much cuter- but as the day progresses it shrinks back to normal.
i agree w/ sillyfishy, you did nothing to cause this and im sorry for your loss.