Alright, I've been trying to keep dwarf puffers for a while, but keep having issues with internal parasites. I had 2 originally and lost them. I got 3 more about 3 months ago. Maybe longer. I only did one treatment of the jungle tabs IP treatment when i first got them. They looked fine. Had big round bellies. Then i went on vacation for a week and 1/2 about a month ago, my sister was feeding them pre-measured portions while I was gone. When i got back they were really skinny. They were still eating so i started treating again right away, but as of 2 days ago I lost the last one. Is it possible for them to contract IP without the addition of new fish? Or is it that I just never got rid of them completely and it took this long for visible signs of the parasites? I want to get more cause I really love them, but not until I am better prepared to deal with the IP.