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Why school's cool for fish

Posted Sep 27, 2006 at 06:26AM by Alaric S. Listed in: Animals and Wildlife, Oceans
Ó

fish school


Why are some fish smarter than others? Because they hang out in schools!

Actually, fish form schools (or shoals for groups made up of similar-looking but various species) as a defensive move against predators. Swimming in a synchronized manner, scientists believe, enhances predator detection and reduces the chance of capture. It also helps the members to find food. Schooling is also the undersea counterpart of a singles bar. When fish forms schools, they have a higher chance of not striking out and finding a mate. Some researchers also say fish swim better in schools or shoals because of better fluid dynamics.

Usually, schools are made up of fish of the same shape and colors. Obviously, being an "individual" in a swarm of "conventionals" makes it an easier target for hungry predators. A school of fish can have just a small number of members or - as can be seen from this awesome photo - it can have more than a zillion!

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