- Reaction score
This may be nothing but I wanted to make sure. After my main lights go off these thin white string like things come out of the rock. They seem to be attached to the rock and move around with the current. They are from 1/4 to 1 inch or so in length. I would assume they are some type of worm that gets small particles of food from the water column. I wasn't sure if they would sting corals or if they would bother the mandarin I just got, as he cruised around over the rocks looking for pods. Has anyone seen these things in their tank?