You will absolutely love your jawfish. Mine had so much personality and kept his regular home one side of the tank and then the "bachelor pad" on the other side in case he ever found a mate. Unfortunately we had a hurricane that knocked out our power for a week and it died
Mine ate pretty much whatever was put in the tank so brine shrimp, scallop, silversides chopped up finely, squid etc etc. It also needs a deep sand bed to burrow in.
Make sure you got some sand in the tank because they burrow