We recently got a 40 gallon tank for me to keep my community fish in so that the 75 can become our cichlid tank. In the 75 we have the following fish: 1 firemouth, 1 angel, 2 scissortail rasboras, 1 opaline gourami, 1 pleco. What other cichlids and what sort of dithers should we look to add. I know he wants a jack dempsey, and possibly a green terror.