It's called a red king crab, but one caught in Nome, Alaska, didn't get the memo: It turned up in fisherman Frank McFarland's pot as a lovely shade of blue, reports KNOM. (The oddity first showed up on the front page of the Nome Nugget.) A state biologist chalks it up to a rare genetic mutation, adding that that he himself had seen one before only in photographs from the 1980s, reports Alaska Dispatch News. For now, the otherwise healthy crab is being held in a tank at the Norton Sound Seafood Center and has become what AP calls a "rock star of sorts" among curious visitors. Fittingly, "it's kind of the color of a forget-me-not," says the manager caring for it. It's a first for him, too.