In the future if you get small cichlids buy more than 2.4×2×2 ft... Yes just these 2 alone
Cichlids will develop a pecking order so aggression can be spread toward others rather than one.
I suggest you separate them with a divider if the aggression is extreme torn fins, other fish retreating to a corner to escape the onslaught.
Eventually one will get too stressed out and die.
I just personally went through this with 4 juvenile Convict Cichlid.