What happens with a laserpointer and fish?

[Toodleypops]

haha hours of fun... lol especially at a petsmart haha. i used to do it all the time there cuz you can go from tank to tank to tank

 

[cassharper]

I used to give my GSP stimulation by doing this, kept him busy while I sat on the couch and did homework/watch tv. Then one day he ran into a rock going really fast, so I stopped.

most of my larger fish chase it or get annoyed by it. The dither school of colombians however.... freaked out!