Cichlid Species from Africa's Lake Malawi (IMAGE) Florida Atlantic University Caption There are more than 500 cichlid species in Africa's Lake Malawi. They evolved from a few species that likely entered the lake about 3 million years ago and now display very different behaviors and inhabit well-defined niches throughout the lake. Credit Justin Marshall, University of Queensland Usage Restrictions Credit: Justin Marshall, University of Queensland License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.