What fish genomes can tell us about life on land Michael Gross  Current Biology  Volume 23, Issue 10, Pages R419-R421 (May 2013) DOI: 10.1016/j.cub.2013.04.068 Copyright © 2013 Terms and Conditions

Zebra crossings: Zebrafish (Danio rerio) is already an established model system for studies in functional genomics. Its completed reference genome and additional tools to probe gene function will make it even more useful for studies of genetic functions shared between vertebrates. (Photo: © Dries Knapen, http://zebrafishlab.be, University of Antwerp, Belgium.) Current Biology 2013 23, R419-R421DOI: (10.1016/j.cub.2013.04.068) Copyright © 2013 Terms and Conditions

Inner fish: While we humans tend to have grandiose ideas about our special position in the tree of life, more than 70% of our genes have an obvious orthologue in zebrafish, suggesting that the vast majority of our genetic heritage evolved in an aqueous environment. Therefore, research into the genomes of fishes can help to address medical problems. (Photo: iStockphoto 07-15-11 © Vladimir Piskunov.) Current Biology 2013 23, R419-R421DOI: (10.1016/j.cub.2013.04.068) Copyright © 2013 Terms and Conditions