I tried my friend Google, and couldn't find any info. My wife has had a Porcupine Puffer for a few months now. It started showing a few spots of ich just a couple of days ago. This doesn't overly concern me. The part that does concern me is the fact that he appears to have gone blind. It swims around, bumping into things. If I hold the food right in front of it, it doesn't seem to be able to see it. It doesn't come to the glass and act like a dog any more either. It will eat, you just have to place the food right in front of it so it can find whatever you are trying to feed. It does seem to still have a sense of smell. Anyone ever seen this? Very confused as to what my be causing these symptoms. I couldn't find any info on whether or not ich would cause blindness.