In general, wrasses tend to be jumpers, so they need a tight fitting lid.
What kind of hermit crab is it? That might be the determining factor. Here are some, in case you don't know what kind it is:
http://www.liveaquaria.com/product/s...cfm?pCatId=501
That wrasse needs a minimum of a 70G tank. As the Dragon Wrasse matures it will eat crustaceans, snails, shrimp, starfish, smaller fish, worms, and other invertebrates. (so he might end up eating your whole clean up crew, including the hermit.)
Others will come along and better assist you, since that is all I have read on them....
, you dont have anything to worry about unless your hermit is the size of a watermelon. people are always quick to assume the hermit the culprit when they see it feeding on your prized fish, but more often than not, the hermit found the fish and started eating it after it was already dead. if the hermit crab did catch the fish with its pathetic claws, then your fish was terribly sick and it was going to die anyhow.
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