#ed_op#DIV#ed_cl#I started a 58 gallon saltwater tank in September. I have about 58 lbs live rock. I have a yellow tang (for about a mth)and clownfish perc( about a week) along with 7 astrea snails and hermit crab and one small pink soft coral ( about a mth). #ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#My question. Last nite after I turned off the lites for about an hour, I glanced at a corner of the tank on the bottom by the live rock and I discovered a disgusting 4 inch long centipede like creature that was dark gray. It was thick like a worm. I also noticed3 smaller looking creatures that resembled it but were verytiny and thin and about 1 inch long. Are they a threat to my fish or any future coral or snails? What is that creature? Can I get an anemome with that thing in the tank?#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#Thanks #ed_op#/DIV#ed_cl#