Illustration from research article . The evolution on egg-spots on mouthbrooding cichlids has finally been explained. A recent scientific article details how the rapidly evolving Haplochromis cichlids developed their characteristic anal fin coloration. If you've kept Lake Victoria or Lake...

Egg-spots on Astatotilapia burtoni. We've all seen egg-spots on mouth-brooding cichlids, particularly on male haplochromines. The assumption has always been that the egg-spots spur the female cichlid to "pick up" the eggs and as a result, fertilize the eggs in her mouth. However a new study has...