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Anyidea why laser pointers used on a fish tank make the fish freak out?

Asked by sacaver (433points) September 15th, 2008

Yeah, random question, but I accidentally left a laser point on while I was pointing it at a screen. The beam happened to intersect a fish tank. When the beam went into the take, the fish freaked. Erratic swimming, fast swimming, etc. Any ideas on what’s going on?

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