i agree with Frank. i have seen this in some reef tanks where i added a piece of live rock or coral and something "piggy backed" in with it. try putting a leaf of lettuce on the bottom and see what comes out to munch on it. if its a vegetarian it wont be able to resist. and please let us know!! rich green milton, MA _______________________________________________ AGA-Member mailing list AGA-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/aga-member