I have a young Green spotted puffer. He has been doing very well in his 30 gallon brackish tank. Its got moneywort and duck weed lots of hidding spaces and is nice and warm. I have been feeding him blood worms, krill, shell on shrimp, snails of corse and other treats from time to time. But recently he has nearly stopped eating. His tummy is sunken in so he looks really bad and he won't eat anything. Usually when I give him a treat like a bit of shrimp I wave it around the top of the tank and he goes crazy jumping at it. But now he can't even seem to notice I'm there. Its like he can't see me or the food in front of his face. I have noticed when he does eat he seems to spit it out allot. I have wondered if I need to trim his beak. But he is so small and skinny right now. I am fairly new to keeping tropicals fish so I am learning. I have kept gold fish for years and a few molly and danno tanks but these guys certainly aren't anything like those. Please any advice I don't want Tucker to die cause I'm a novice!