You won’t believe this: thousands of bumblebee catfish were spotted scaling waterfalls in Brazil for the first time ever! These tiny fish (less than 9cm!) gather in massive clusters and use their fins to suction themselves up rocks, especially at night. Scientists think this wild migration is for spawning, and get this—they don’t even eat during the climb. Fish climbing walls is officially a thing now. Nature is wild! #Science #NatureIsCrazy #Catfish