Did sonny reds crew and sonny blacks crew openly dislike eachother?

Yes because Sonny Black Was a Street Neapolitan from Brooklyn and Sonny Red Was a Street Sicilian from Manhattan (What I Mean is they werent Busniessmen) and there was a power struggle between the diffrent factions in the Bonnanos

Yes. Sonny Red and Sonny Black wanted to kill each other to become the last Caporegime standing and having the most powerful of Soldato's which means the last Capo standing would make loads of money from tribute.