the lfs said it was Neolamprologus Tretocephalus but this one looked bigger and had longer fins so is it a hidden gold mine aka and that legendary Tanganyikan cichlid, "frontosa " thats what i am hoping for it to be
Frontosa are very peaceful with pretty much anything other than other Frontosa. They are however highly predatory on smaller fish, so you should just figure that when something fits in his mouth that's where it will shortly be.