John Stewart

Research interests

  • Fish & crustacean biology
  • Fisheries assessments
  • Fishing gear selectivity
  • Barotrauma in fish
  • Using otoliths to estimate fish age and stock structure


John Stewart is a Senior Research Scientist based at the Sydney Institute of Marine Science.  He leads the Department’s wild fisheries stock assessment program, the Department’s major fish ageing and biology laboratory, as well as several monitoring and data collection programs including the Commercial Fisheries Port Monitoring Project and the recreational fisheries Research Angler Program.  John’s team is also responsible for integration of data from across the Department’s databases for the purpose of monitoring and assessment.

John completed his PhD in 1999 (University of Sydney) on the biology of Balmain bugs.  He joined NSW Fisheries in 1990 and has worked on a variety of exploited crustacean and finfish fisheries since then.


  • PhD – University of Sydney 1999
  • BSc – University of Sydney 1989

Current projects

  • NSW Commercial Fisheries Port Monitoring Program
  • The New South Wales Research Angler Program
  • Assessment of the recreational tailor fishery in NSW
  • Surplus baitfish? The consumption and bioenergetics of a predatory fish
  • Informing inter-jurisdictional snapper management in eastern Australia
  • Population biology and habitat use of hairtail in NSW waters

Recent publications

Please refer to John Stewart’s ResearchGate page

Professional associations and achievements

  • Australian Society of Fish Biology

Contact details

Phone: (02) 9435 4668