Yenko
Fish Addict
The lasers probably won't do anything. If they are real lasers, they will make a narrow beam of light, which won't bother your fish much; after all, the odds that they'll ever get the laser beam right in the eye are so slim that it won't happen more than 1 or 2 times a week, unless you have lots of them.
If they're LEDs, which they probably are, they make pretty colored light. Nothing else.
If they're LEDs, which they probably are, they make pretty colored light. Nothing else.