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These fish climb waterfalls.
In Brazil, thousands of bumblebee catfish were filmed inching up vertical rock faces, fins spread wide and fish climbing over one another. The footage records the climb; the researchers suggest that the group was moving upstream to spawn because mature males and females appeared during the rainy-season migration. The purpose and the exact grip mechanism remain open questions. 1 #WeirdScience #AnimalFacts #ScienceDoodle #FishFacts
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