I'm sure there are lots of posts about them here on the forum if you search. Jewels have long been a staple in the hobby so info is probably fairly easy to come by. I'm guessing the turquoise form is a variant of Hemichromis bimaculatus, but H. lifalili is also pretty popular due to the bright red color. Here are a couple links with general info:
www.seriouslyfish.com
www.seriouslyfish.com