The Puffer Forum

I have had a happy group of puffers for more than a year now. Today, one did not come out to eat until I found him laying behind a rock with this large white bubble on his belly. Did not notice it yeaterday and he was swimming and eating fine. He seems to be barely alive, it doesnt look good. What am I looking at? Is this a parasite that can get to the rest of the group? I feed mainly frozen bloodworms with pest snails as treats.

pic attached

Prolapsed rectum? Try adding 1 tbsp Epsom salt/10g.