Cichlid fishes exhibit some of the most spectacular examples of adaptive radiation, diversifying into dozens of species within individual lakes over remarkably short time frames. Sympatric ...

Avoiding quicksand along the banks of the Ivindo River in Gabon, Cornell neurobiologists armed with oscilloscopes search for shapes and patterns of electricity created by fish in the water. They know ...

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 ...