tiny worm-like swimmers

[reefernomad]

Last night I found these tiny worm like things swimming in my tank. There were some red ones and some blue ones, the largest was a little less than a centimetre long and the smallest was only a couple millimetres. They move in a snake like wiggle motion and very quickly. I found them while looking at my tank in total darkness with a small, dim blue light, and they seemed to be attracted to the light, following it around as I moved it. Unfortunately they were too fast to get a picture in the darkness. Anybody have any ideas?

[lakshwadeep]

They were probably epitokes, bristle worms reproducing.

http://en.wikipedia.org/wiki/Epitoky