These fish work together by the hundreds of thousands to make waves

In the sports arena, spectators sometimes create a spectacle known as a wave, as successive groups stand up in unison to yell with arms in the air. Now, researchers have shown that small freshwater fish known as sulphur mollies do a similar thing, and for life or death reasons. The collective wave action produced by hundreds of thousands of fish working together helps to protect them from predatory birds.

from Top Environment News -- ScienceDaily https://ift.tt/3Ja4ejt