I just lost my Blue spotted jawfish to a BTA, yeah they do kinda hang out in the burrow but they are really fun to watch. My BSJ was really protective of his burrow, one day a hermit crab was getting a little too close so his burrow so he darted out, picked the crab up and spit him out about 8" farther away. Sure enough, crab works his was back over to the BSJ's burrow and so he darts out, picks him up again and then spits him out about 2 feet farther away. Little later the crab has worked his way over again, so the BSJ darted out, picked him and swam all the way over to the farthest point in the tank and spit the crab into the glass...Funniest thing I've ever seen.