The World's Sneakiest Fish Just Got Sneakier | Defector
Briefly

The false cleanerfish mimics the appearance of the bluestreak cleaner wrasse to deceive other fish and feed on their fins and scales, showcasing a fascinating example of mimicry in nature.
Real bluestreak wrasses engage in cleaning behaviors, while the false cleanerfish takes advantage of their appearance to fool potential clients and feed on them instead.
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