thanks for the quick reply. I think i might treat him for parasites, he was in pretty rough shape. i have him in a tiny(3 gallon) QT tank now. Hes doing much better now. Its a pretty sad story how i got him, and i feel really stupid for it. I went to walmart with my mom to get something. I try to avoid walmart, but i went to help out my mom. I walked by the fish tanks, which always makes me feel awful, and this time i saw this tiny little puffer in a disgusting tank. he was starved and i felt terrible for him, and when i watched the worker dump in some crappy flaked food, i couldnt help myself. he was in fresh water so im going to acclimate him to brackish. I still feel really stupid for buying it from walmart but i just felt so bad for it