Explosion in fish biodiversity due to genetic recycling, study shows

Scientists show that the extraordinary diversity of cichlid fish in Africa's Lake Victoria was made possible by "genetic recycling"—repeated cycles of new species appearing and rapidly adapting to different roles in the ecosystem. An evolutionary case study that has fascinated researchers for decades, the new study sheds light on how 500 species of fish were able to emerge and thrive in just 16,000 years.