Scientists from the Naturalis Biodiversity Center and the Institute of Biology Leiden, the Netherlands, have found two new species of cichlid fish in Lake Victoria, Tanzania. This image shows a male of the new species Haplochromis argens (Frans Witte / de Zeeuw MP et al) In 1985, biologists from the Institute of Biology Leiden made a survey in the Tanzanian part of the lake to establish the status of the rapidly declining cichlids. During this expedition...