what is this now?

[jrizo1]

I when to check on my coral with a spot light and i notice thousands of little animals following the light i scoop i few out of the tank and i am looking at it with a magnifier they have tail and two eyes
what can this be ?

they look like brian shrimp

 

[klepto]

It sounds like you are talking about either amphipods (likely) or mysid shrimp that are breeding in your rockwork/livesand. They are beneficial and act as a food source for all sorts of other animals.

Pictures would be helpful though to know for sure.

 

[namxas]

Gammarids don't have "tails", but the swarming to the light suggests copepods to me.

Take a look for your critter in our PICTORIAL HITCHHIKER GUIDE. I bet your answer lies there, as well as info about the critter in question. Just scroll down and match the pic to your critter.