I have Neolamp brichardis in with my Frons, however they are coming out... as I am thinning out my adult pairs... not that they have really cut up nasty in regards to damaging other fish etc but I think the Frons could do without their hassle really to be honest. Brichardis are very good with their own, in the wild they live in massive colonies and when a pair decide to split off they will find an area to breed in and defend the area and babies fiercely... then once babies are old enough etc they all move back to the big colony... They make wonderful parents, and are great to each other, however, I am taking my Brichardi out exactly for the same reasons that cichfanatic said. I think keeping only one in the tank would be fine or possibly 2 of the same sex, however, having 2 or more of the opposite sexes would be asking for trouble.