the yellow one looks like a labidochromis caraeleus (electric yellow lab).... not sure on the spelling and the photo is a bit fuzzy but please don't think I'm critiqueing you, it is so hard to get clear photos of fish, unless yer lucky enough to have an 800 dolla' camera...LOL
In my lowly opinion, though, they look like African mbuna....rock-dwelling fish from Lake Malawi.... They'd appreciate lots of caves to make little territories and make sure you feed them a diet LOW in protein....high in plant matter, I buy these frozen cubes called Emerald Entree and they love that stuff...
Good luck with them! Some of the pros will be here soon I am sure to scrutinize your photos and offer up some more concrete ID's...