I added a pencil Urchin to my tank about a month ago. Today I cannot seem to find it anywhere! Is there anything that would have eaten it and left no trace of it?!?! It is in a tank with a Sailfin, Yellow Tang, Coral Beauty, Snowflake Eel, a few clowns, a Foxface, a Copper Banded Angel, a small clown Trigger, a Yellow Eyed Tang, and a few small damsels...



