Sep 4, 2011 #1 B bianca90 Aquarium Advice Regular Joined Feb 27, 2011 Messages 72 Not the feather dusters but the tentacles coming out of that tube? Attachments 2011-09-03 11.03.41.jpg 98.9 KB · Views: 94
Sep 4, 2011 #2 mr_X Aquarium Advice Addict Joined Apr 27, 2008 Messages 17,895 Location Fairless Hills, Pa. that's a spionid worm. they catch food passing by with those tentacles. they are harmless.