defently oscars if you want a fish with personality , i had some and when we re arranged the room the fish did nt like it so he re arranged the tank and moved about 40kgs of gravel to one end of the tank also he would not come out unless he liked the person in the room ,like he didnt like my mum and she was like y does it always hide but when i feed him (worms, bloodworms,ox heart, guppys)he practly jumped out of the tank for the food