yeah if you like a heavily stocked tank with smaller fish then you should go with african cichlids, they dont have as much personality/interaction with you but they are neat looking fish and are probably more what you are looking for. there are also small CA/SA cichlids that you could stock with but still wont be able to do as many as with africans, there are convicts, firemouths, salvini, honduran red points, sajica, neets (these guys are little beasts and really cool looking with major attitude) among many others, you could do about 4 of these with some higher bodied tetra for added activity...