Sympatric Speciation of Midas Cichlid Fish (image) University of Konstanz Share Print E-Mail Caption The Midas cichlid fish from the crater lakes of Nicaragua are one of the the best known examples for sympatric speciation. They evolved from a source population into a variety of independent species in less than 22,000 years. Credit University of Konstanz Usage Restrictions None Share Print E-Mail 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.