Lake Mweru (IMAGE) St. John's College, University of Cambridge Caption This is Lake Mweru, home to 40 new species of cichlid fish. Credit St John's College. Usage Restrictions None 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.