Environmental Biology of Fishes is an international journal that publishes original studies on the ecology, life history, epigenetics, behavior, physiology, morphology, systematics and evolution of marine and freshwater fishes. Empirical and theoretical papers are published that deal with the relationship between fishes and their external and internal environment, whether natural or unnatural. The journal concentrates on papers that advance the scholarly understanding of life and draw on a variety of disciplines in reaching this understanding. Environmental Biology of Fishes publishes editorials, papers, critical book reviews, editorial comment and announcements.'' ***Please note that the Threatened Fishes of the World series has been discontinued. Manuscripts can no longer be submitted*** We are pleased to announce that Environmental Biology of Fishes is now available Online First. The Online First service lets users access peer reviewed articles well before print publication. These articles are searchable and citeable by their DOI (Digital Object Identifier) and hence significantly reduce the time it takes for critical discoveries to reach the research community. To view Online First articles please visit Springerlink by clicking on the icon on your right-hand side. Additional information: how to use the DOI in a reference citation? Below you will find 3 examples on how to reference to electronic publications Article by DOI (with page numbers) Slifka MK, Whitton JL (2000) Clinical implications of dysregulated cytokine production. J Mol Med 78:74-80. DOI 10.1007/s001090000086 Article by DOI (before issue publication with page numbers) Slifka MK, Whitton JL (2000) Clinical implications of dysregulated cytokine production. J Mol Med (in press). DOI 10.1007/s001090000086 Article in electronic journal by DOI (no paginated version) Slifka MK, Whitton JL (2000) Clinical implications of dysregulated cytokine production. Dig J Mol Med. DOI 10.1007/s801090000086