Ctenopharyngodon idella is a diploid member of the family Cyprinidae, as is the Zebrafish (Danio rerio). Other sequenced fish genomes (fugu, stickleback, medaka) are nearly 200 million years divergent from that of Zebrafish, we choose a closer relative to investigate if the closer phylogenetic distance would allow better comparative genetics. We were particularly interested to see if short read sequencing would be sufficient to enable cross species mapping at this distance (10-20% sequence divergence in genic regions). We used 108bp paired end reads of a no pcr library of ~200bp inserts - so anticipate many pairs will overlap. Collaborators are Adam Rodaway (adam.rodaway@kcl.ac.uk) and Lior David (Israel) . This data is part of a pre-publication release. For information on the proper use of pre-publication data shared by the Wellcome Trust Sanger Institute (including details of any publication moratoria), please see http://www.sanger.ac.uk/datasharing/