LionFish says.....
Well, I'll tell ya what they are really cool fish. They do an awesome job of stirring up the sand at night. They are realatively hardy but they can be hard to introduce into a tank. If you have good water conditions and your PH and Salintiy are correct then you should be fine. You want almost perfect water quality so the fish doesn't get poisoned. They usually don't exceed 10 inches but I have seen a couple get 12 inches. They are no small fish. They tend to be quite docile and peaceful but if any other fish hassles it in any way there will be hell to pay. They can open up a can on just about any fish but they do seem to be nicer than most wrasses. They eat all small meaty foods like any other large fish. Feed them krill, chopped squid, shrimp, and you can chop up silversides and they will be healthy. This all makes up a good balanced diet. The coolest thing about these fish is that they have blue teeth. That is really awesome. They are constantly active and they prefer to have a cave to sit in at night. They do burrow a lot but they should have a cave. Once they get used to you they will become tame and will come over to greet you. Really cool fish. Also, you may have to upgrade to a 125 gallon tank once it gets really big. Hope this helps.