Just wanted to add a bit of info to this thread... There are actually two fish called "chocolate cichlids" (gotta love common names

), the common one is Hypselecara temporalis, which is what people are posting pictures of here. There is another closely related species called Hypselecara coryphaenoides.
They are kind of dull normally, but they get some amazing black/yellow coloration when they're in breeding dress. I'm sure some members already know this, but just wanted to post it here in case someone didn't--they are not seen very often outside of speciality Cichlid sellers.