Hello, I baught a small tiger oscar to put in with my mad barb, tinfoils, balas, black bar silver dollars, all fish are good sized and growing well. My questions are: will the oscar being alone with no other oscars or cichlids grow up to be mostly non teritorial and not aggressive towards the other fish when it grows big? Will he mostly leave the gravel olone or move it all over the place, any information would be interesting. thanks, Bob