identifying a few fish

As i get more fish, i'm paying more attention to their interaction with each
other. However, i have a african cichlids that i have not identified. I
have a solid orange one. Also, i have a pale blue fish with a yellow fin.
He looks like an acei, but i'm not sure if it is or a variation. Also, i
have a small blue fish with a black line on his top fin, and a light
horizontal strip going across his body. Any idea what these are, or a good
site to identify? Most of my fish are malawi, so these probably are too.