[tang daddy]

like many have said don't do it my freind had one for um about 2 months then the facination wore off not only do you need a big tank later on they grow quick also they don't do much except for hide and come out when it's dark I would sooner put fish in the 120 and if you really want a cat shark put a rubber one under a rock cause that's basically the extent of what they do. btw not trying to be an *** or anything just telling the truth!