is a little writeup on them.
you like those hiding ambush hunters huh.
there are many different kinds of these out there. anything from just hoping down to the coast and catching one yourself while bottom fishing to getting the Rhinopias spp. that are quite expensive. have you looked at getting a frog fish? they are relatively inexpensive, but are great lurkers and eaters. do not spend extra money on any of the brightly coloured ones, they all take on the colours of whatever is in the tank. if you have a red sponge in the tank than the frogfish will be red, if there is a grey rock in the tank than it will be grey, even if it started out red.