Hiya.
The two african cichlids are, using common names, an Auratus and a Red Zebra (Probably a red zebra anyways).
These will both get very aggressive as they mature, the Auratus in particular. The 2.5 gallon is incredibly small for these two fish, as they will both easily reach 4 inches it not upwards to 6. Yours are very young but these two together will require at least a 10 gallon by themselves, if not a 20 gallon.
I have a 90 gallon and have just removed an Auratus because it decided half the tank belonged to it alone. This fish literally kept all of the others, 15 in total, on the other side of the tank. My red zebra, ironically enough, was his main rival for 'control'.
These two breeds will not do well in a smaller tank, especially once they mature and begin to fight for territory.