Tank size for my cichlids

[Mbk1997]

Mixing Central American and South American cichlids can work sometimes, but more often it results in these problems. SA cichlids are much more inclined to share a tank. CA want to kill everything else. Your Oscar is SA, the rest are CA.

The oscar and jack were together from when they were maybe 2in and the firemouth and convict basically ignore him for the most part plus hes already the biggest everyone basically keeps to themselves ive seen next to no agression from them besides arguing over decor but no lip locking or anything