Our People

Click the pictures below to view our Board of Directors and Management Team profiles.

Board of Directors

Grahame Turk, AM



Grahame has been a director or chief executive of Sydney Fish Market since privatisation in 1994.

He has served on numerous industry and government advisory bodies and played a critical role in the establishment of the industry peak body Seafood Industry Australia.

In 2016 he was appointed a member of the Order of Australia for service to the fisheries and seafood industry.

George Apostolakis

George commenced employment with M&G Seafoods Wholesalers in 1992. At around the same time M&G purchased Marine Foods within the market auction hall. M&G Seafoods Wholesalers is a family business that was established in 1969. George was appointed to the Board of Directors on 19 April 2016.

Sandra Hook

Sandra joined the Sydney Fish Market board in February 2013. She is an experienced CEO and independent board director who has successfully run high-profile media businesses bringing more than 25 years of experience across print, TV, radio, digital and PR. She works with businesses on their complex marketing and strategic issues with a particular interest in brand, strategy, customer engagement and commercial drivers.

John Jeffreson

John is the owner of two seafood retail stores, Nicholas Seafood Traders and Peter’s Sydney Fish Market. John has helped his businesses build a loyal following within the local & international seafood community and is a strong advocate for sustainability and supporting Australian products, working exclusively with companies that align themselves to Australian fisheries regulations. He was appointed to the Sydney Fish Market Board of Directors in April 2016.

Keith Louie

Keith is an experienced retail CEO with a strong background in fresh food logistics and eCommerce. Keith was CEO of the Aussie Farmers Group for two years, led online shopping for Coles Supermarkets for six years, and has subsequently advised several leading retailers and wholesalers on supply chain and digital transformation. Keith joined the Sydney Fish Market Board in December 2019.

Tony Lavalle

Tony Lavalle is a fourth-generation fisherman from Ulladulla and has been fishing since 1984. He was a previous director of Ulladulla and Bermagui Fishermens Co-Operatives. Tony owns two large trawlers and is a current director of the South East Trawl Fishing Industry Association as well as the Catchers Trust. Tony joined the Sydney Fish Market board in February 2020.

Steven Everson

Steven Everson a fourth-generation commercial fisher from the Clarence River region and is involved in the estuary and offshore prawn trawl fisheries. He is a current director on the Catchers Trust and a sitting member on the Commonwealth Fisheries Association.  Steven was previously chairman and director of the Clarence River Fishermen’s Co-operative. Steven joined the Sydney Fish Market board in February 2020.

Management Team

Greg Dyer

Chief Executive Officer

Greg is a broadly experienced senior executive with focus on leadership, strategy, organizational change, community engagement and liaison.

He has an extensive background in high profile private and public enterprises, including ASX listed Mirvac Group, FKP Property and APN News and Media. Greg spent four years in the Local Government sector as the CEO of City of Parramatta Council, leading the development of Parramatta as the central city in the GSC’s three city model and successfully instigating the city-defining $2b Parramatta Square urban renewal project. 

Gus Dannoun

Executive Manager, Seafood Trading


Before joining the NSW Fish Marketing Authority in 1981, Gus planned for a career in IT, a vocation that would ultimately involve him in transitioning the Authority’s voice auctions to its first Dutch Auction clock system and front-end support network.  Gus was IT Manager from 1992 until his appointment to his current role 1997.  Gus is primarily responsible for the company’s seafood trading, namely developing, sourcing and coordinating seafood supply and trade, and the management of the organisation’s fish quota portfolio.  Gus is the chair of the Australian Fish Names Committee and the NSW Fishing Industry Training Committee and is also the treasurer for the South East Trawl Fishing Industry Association.

Stephen Groom

Executive Manager, Corporate Services and Company Secretary


Stephen joined Sydney Fish Market in 2012 having spent more than 20 years working in finance and accounting roles in both Australia and the United Kingdom. Prior to joining Sydney Fish Market, Stephen worked as company accountant for a large medical company, head of management accounts for a large property company, and management and reporting accountant for Manchester Airport. Stephen was appointed company secretary in November 2012.

Roberta Muir

Sydney Seafood School Manager

MA (Gastronomy)

Roberta has managed Sydney Seafood School since 1997. In 2003 she obtained a Master of Arts degree in Gastronomy from the University of Adelaide. Her passion for food, wine and foreign culture has led her on adventures in Europe, Asia and the Middle East. Roberta freelances in food, wine and travel writing and is the author of four food books, including the Sydney Seafood School Cookbook (Penguin, 2012). 

Nick Paton

Information Systems Manager


Nick joined the NSW Fish Marketing Authority in 1990. He left SFM in 1995 and worked as an analyst programmer at a software company developing manufacturing and distribution software. In 1996 he returned to Sydney Fish Market as information systems manager. He has a masters degree in information technology.

Stephanie Margrain

Marketing & Communications Manager


Stephanie joined Sydney Fish Market in 2013 having previously worked in public relations agencies specialising in travel and tourism. Stephanie guides Sydney Fish Market’s corporate social responsibility strategy and oversees the company’s marketing, public relations, sponsorships and events. She sits on the selection committee for the National Seafood Industry Leadership Program and the Harris Community Scholarship Fund. Stephanie holds a bachelor of communication studies majoring in public relations. 

Current Industry Participation

Grahame Turk, AM - Chairman 
National Aquaculture Council - Director
Seafood Industry Australia - Sydney Fish Market representative

Gus Dannoun - Executive Manager, Seafood Trading  
South East Trawl Fishing Industry Association (SETFIA) - Treasurer
NSW Fishing Industry Training Council - Chair 
Australian Fish Names Committee - Chair