In PLoS One this week, researchers at Università degli Studi di Perugia in Italy present molecular and phenotypic evidence to delineate a new species of the genius Esox, the southern pike, E. flaviae. "We address the taxonomic position of the southern European individuals of pike, performing a series of tests and comparisons from morphology, DNA taxonomy and population genetics parameters, in order to support the hypothesis that two species of pike ...