The black and white/silver fish in the bottom-middle of the first picture is a tetracanthus, Cuban cichlid. Not a Jaguar, that is actually a different fish, managuensis.
These guys will all get very mean when larger, and to live together, would probably need something upwards of 200 gallons. But, none that you have get larger than about 12", and each could be OK in it's own 75 gallon if you went that route. When young, many people keep them together like you are now, in a "growout tank". These guys also grow at varying rates- the cuban might grow a bit slower than say the flowerhorn for example, which can put on an inch per month. Unfortunately once they are large, they will almost certainly kill each other unless in a very large tank, or separated. Keeping cichlids, especially from CA (cuban, texas, etc) together in a community is challenging, requires a lot of trial and error, and it's best to have empty tanks on hand to shuffle fish around.
They are not the easiest fish to keep in terms of aggression, but still are my favorite group of fish to keep, because they have so much personality.
This is a cuban (tetracanthus) I used to have