Dean Gilligan

Research interests

  • State-wide freshwater fish monitoring
  • Captive breeding and reintroduction of threatened fish
  • Fish-habitat associations and species distribution modelling
  • Pest fish control
  • Environmental water and fish
  • Conservation genetics


Dean Gilligan is a senior research scientist in the NSW Department of Primary Industries Freshwater Ecosystems research team. He joined NSW Fisheries in 1998 and has undertaken research into fish passage, state-wide freshwater fish monitoring, environmental flows, threatened species biology and recovery, carp impacts and control, population genetics and species distribution modelling. He has worked from the Port Stephens Fisheries Centre, Narrandera Fisheries Centre (where he spent 7 years as Director of Research) and is now based at Batemans Bay Fisheries Office. He has produced over 100 scientific outputs and has co-supervised 13 post-graduate students at various Universities. Dean is a member of the NSW Governments Fisheries Scientific Committee, a NSW representative on the Australian Society for Fish Biology's Threatened Fishes Committee and is Program Leader of the Invasive Animals CRC's Inland Waters Research program.


  • PhD Conservation Genetics – Macquarie University 2001
  • B.Sc. (Hons) – Macquarie University 1995

Current projects

  • Assessment of fish communities for the Snowy River Environmental Flows Project (funded by the NSW DPI Water)
  • Impacts of redfin perch invasion on Macquarie perch in the Upper Lachlan catchment and development of captive breeding capacity (funded by the NSW RFFTEC)
  • Murray-Darling Basin Plan fish condition monitoring (funded by the MDBA)
  • Carp herpesvirus-3 registration, release and selected monitoring (funded by the IA CRC)

Recent publications

Please refer to Dean Gilligan's Google scholar page.

Professional associations and activities

  • Invasive Animals Co-operative Research Centre
  • Australian Society for Fish Biology
  • Australia New Guinea Fishes Association

Contact details

Phone: (02) 4478 9100