Fun Fact Friyay

Fun Fact Friyay

The Hawaiian Fish That Can Scale Waterfalls

Thanks to some unique evolutionary traits, these fish can get vertical.

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Joey Held
Jul 24, 2026
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Howdy! It’s Joey, back with more Fun Fact Friyay. Today’s fact is going swimmingly.

Thomas Irvine/CC BY 4.0

The ‘o’opu ‘alamo’o, a fish in Hawaii, can climb vertical waterfalls.

I visited the island of Maui last month, and it is very hard to believe that Hawaii is the same planet that you and I live (unless you live in Hawaii, in which case, it’s quite eas…

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