These fish grow quite large (around 10 inches or more). As Tropicals they should be kept at around 70F to 78F and be in a well filtered tank of at least 48" x 18" x 18" dimensions. (Bigger is much better)
I suggest no, because I personally own a red devil cichlid. Known for their extremely intelligent and aggressive behavior, one red devil should have a 50 gallon tank all to its own. My personal experiences show that a red devil is able to kill all sorts of cichlids, some being even larger than itself.
All Cichlids are egg layers and so don't get pregnant.
Yes they can... but I was with the most Mbuna, they cannot be kept in pairs.
It is possible if the tank is sufficient in size and provides enough territories and enclosures.
There are many. Far too many to list here.
best is to either split them up, or add more fish to spread the aggression. Just dont have more fish than your tank can handle.. if I recall off the top of my head, you need 1 gallon of water, per 1 inch of fish
I would advise you to get rid of the Jaguar cichlid (Parachromis managuensis). These fish grow too big for a 10gal tank.
I have an Oscar Cichlid in the same tank as mine and I also used to have it with guppy's.
Around 1.5 to 2 years. Also worth noting is the final length is highly dependent upon tank size.
Mbuna cichlids will grow as large as their tank allows them to, just like other captive fish. The Mbuna cichlid comes in several varieties.
other cichlids or other aggressive fish
When the Red Devil Cichlid (Amphilophus labiatum (in USA) and A.citrinellum (in Australia)) reach maturity, in both species, the males develop a hump on their forehead. I do hope you realise that these fish grow up to 18 inches long and therefore require a very large tank.