It seems like this post has lasted a little over a year, and apparently so has the puffer. I've seen him in there almost every time I go in, and finally today they told me today that I could adopt him for free. I have a video of him I can upload, but I'm almost positive it's the same fish. Any suggestions for keeping him healthy? I don't notice him surfacing as much as the previous video.
And a random other question, are there any large invertebrates or cleaners that he won't eat? Like really big snails? I have a wrasse but I didn't realize he was going to be such a messy eater! I'm fine with the water changes, but would be curious if there are any other cleaners that won't be snacks!