flounder, neat fish, the only thing, they do get fairly big, so you need a rather large tank without live rock in it's way as they grow, they will need more sand to hide in that and yoou want to make sure you don't have any inverts or smaller fishes that he may take a liking to, ever seen these guys eat, anytihgn they can grab, and hiding like they do, they can grab alot,IT'S AWESOME, i would just use caution in stocking this tank, other than that i think they are neat to watch eat, laying on the side, in the sand