My 360 g tank used to have more than 20 adult cichlids (parachromis, Amphilophus, Paratheraps, Vieja, Herichthys, & Crenichla). It worked out for almost two years but I had to separate them in different tanks because of bioload. Some were sold too.
i have my 250g with my 20" pacu, a 14" pacu, 12" oscar, and 8" dempsey then every other fish in that tank is 5" or less, with a small 3" convict and 3" bichir no one bothers.
my only fighting loss in that tank in over a year was a pink convict that had the attitude of a damn snakehead. oscar dident like that much
in my 60 gallon i have 1 JD 1 Jewel cichlid 1 Firemouth 1 GT 1 Albino long fin oscar 1 gold severum 3 bala sharks 2 convicts 1 pleco most are growing out for the 100g how would u split them between 60g and 100g? =)