I bred salvini for 5 years, and have owned at least one for the last 10ish years..... these guys are tough, very attractive, and active. They are like everyone says one of the nastiest fish around... when people talk about tank busters for a small aquarium (around 55 gallons) these are always my first suggestion.. they're not as personable as some of the bigger guys but if your just talking aggresion within the tank......
Imo/e these are very good fish to own if you keep larger cichlids... I like to put mine with jags, argentea, loisellei, and other big dudes. Something I always thought was cool is they seem to go well with meeki, of course I'm talking a pair of meeki and a solo salvini. I wouldent even consider a breeding pair with anything because like was said these guys are rough. I think they are rewarding and fun to keep hands down one of my favorite. Will have a salvini as long as I'm in the hobby and I don't plan to ever not be in the hobby. Good luck.