I agree with R.R. I saw a few at the LFS and that's exactly what they told me. Good luck with your new shroom, maybe he will be blue!!! (probably not but that would be awesome )
I thought the same thing...Cool a white mushroom. I was a little confused because I thought that zooxanthellae was colored and I was wonderin how it stayed alive. That's when I asked the owner of the LFS.