i finally got me a flounder! he's about the size of a quarter, and only cost me $6.99. the tank at the store had gravel and he was just on the side of the tank, sucking on the side (not really, cuz they dont have suckers) when i put him in my tank he went right to the sand and buried himself. man he is fast tho. pretty cool how they bury themselves too. lol, but since they are nocturnal, i wont see much of him anyway. but every once in a while he gets scared from a goby passing by or my puffer and shoots to a new spot and buries himself.