Researchers find why fish swim in schools

Cyclists in the bicycle race ride close to each other. When they ride in a bunch, the amount ofair around them gets reduced. This helps cyclists save energy and ride faster! Recently, researchers set up a water treadmill test for fish. The treadmill created a powerful flow of water. The researchers found that fish swimming in groups through the strong-flowing water saved more energy and swam faster, compared to fish that swam alone.