I have a 10 gal brackish tank with 2 gsp a little over 1 inch long and I've had them for several months now. I am almost done cycling a 90 gal to put them in. Both have always eaten frozen blood worms very well. About a week ago one of them died. They have always gotten along great and there was no evidence of foul play on either. Water tested elevated ammonia. I did a water change and began feeding the one left every other day instead of everyday per LFS clerk's advice. Ammonia has gone down and water test is good. Now my puffer refuses to eat anything. I've tried blood worms, brine shrimp, crab, and mixed sea food. He will eat snails but my snail population can't keep up with his appetite and I don't know if it is ok for him to live on just snails. Any advice on what to try next would be greatly appreciated!