Thanks! I think he just really LOVES the algae in there, but I'll deworm him anyways

It wouldn't surprise me if he's found some snails to much on as well as it doesn't seem easy to put anything past him.
The little guy is asking for a death wish when it comes to the snowflake eel that lives with him. The eel will be chowing down on the skewered meat, and the puffer is right along with him trying to snag a bite or two before it's gone. The eel, thankfully, hasn't shown any aggression towards the puffer or any other tank mates (yet), though. I caught the mandarin sitting ON the eel's back one day.