Dr. Zeb Tonkin is a senior scientist (freshwater ecologist) within the Applied Aquatic Ecology section of the Arthur Rylah Institute for Environmental Research. He currently manages the Instream Habitat and Environmental Flows program at the Institute, working a wide variety of projects relating to recruitment dynamics and migratory behaviour of freshwater fish, environmental flows, floodplain fish assemblages, alien and threatened species and habitat restoration. For the past 15 years, Zeb has worked on a range of collaborative research programs assessing the role of flow and habitat as a driver of native fish populations in the southern Murray Darling Basin. He also leads the Fish theme component of the Victorian Environmental Flow Monitoring and Assessment Program, which is assessing the effectiveness of environmental flows on key processes and dynamics of native fish populations across Victoria.