How Do Fish Know When to School Together?

Fish school together like kids in a line during recess. They don’t need to talk, they just watch each other and follow the crowd. If one fish starts moving, others notice and join in, making a big group that moves all at once. It’s like being part of a giant dance party underwater!

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Examples

A school of minnows suddenly all turn to the left when one of them flicks its tail.
A group of fish swim together like they're going to a party, and no one wants to be left out.
One little fish starts moving, and soon it's like a wave, all the others follow.

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Categories: Biology · fish,schooling behavior,animal communication