Miniature transparent shrimps?

Sorry I can't take a picture/or even a video of it. The creatures were too small for my camera to focus on.

So I will describe it to the best of my ability.

The creatures are small, transparent, and almost shrimp like. I have noticed them just now, they can be seen darting between holes in the LR. I would say .5 cm in size, if not a little smaller.

Their legs move like shrimps and they have antennas, although it is not very long like a shrimps you can still notice it.

Any Ideas? If no one understands my description I will try to get a photo up.

 

Copepods or Amphipods, great little freebies. Usually become fish food.

 

They are mysid shrimp. Probably will look like miniature cleaner shrimp, some with a tinge of red and others with no colour.