I've got a pack of ten synodontis, 5" or so, in my 180 gal. Because there are so many of them in there, most of the territorial squabbles occur amongst themselves, and they really have no interest in the other fish in there. Do you think motoros would do well in there? I've got two pups, around 4-5", that I could keep in a 55 gal till they outgrow it, but I'd much rather not have to set up another tank if I don't have to.