The Pufferfish was a species in Aqua Grabber that guarded the Amethyst in Soda Seas. If you got close enough, it would get frightened, and might of inflated. Once you get far enough, it would deflate. There were no other known references or sightings of pufferfish in Club Penguin Rewritten, other than an alternate form of the Soda Seas pufferfish, Grand Puffy.
