So I was looking on my rock work and I noticed little tiny feather duster looking things on the rocks, Only one of the ones I seen had a little tube it was coming out of and the rest where on the rock work. Im still not 100% sure there feather dusters but there tiny smaller even than a amphiapod and red, they retrack when you move by them just like feather dusters. Does anyone els have these in there tanks ??? I notice them all on my left side of the tank maybe about 15 of them over the corse of mayve 5 rocks.