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Unusual way a sunfish swims

Sunfish don’t swim with a powerful tail like most fish. Instead, they flap their dorsal and anal fins in sync, almost like wings. The small tail-like structure mainly helps with steering. It looks ...
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"If some stop swimming they will suffocate..." Did you know fish can do maths, walk, fly and pee? 15 fish facts that leave you scratching your head

Think you know fish? Think again. From farting herrons to maths geniuses, these underwater wonders continue to surprise us ...