The Rare Mullet (also known as the Grey Mullet) is a species of Fish in Club Penguin Rewritten. The Rare Mullet can be caught in the game Ice Fishing after the July 2017 revamp of the game. It is very rare, and therefore extremely difficult to catch, due to the very low chance of appearing.
There is a one percent chance that the Rare Mullet will appear in-game instead of the Mullet.
If you catch the Rare Mullet, you earn the Rare Mullet Stamp - one of three insanity Stamps to be obtainable currently.