Sustainability at MainStream: Growing great fish, the right way

Sustainability is a core principle of MainStream. We believe we have a responsibility to do everything we can to create a healthier, cleaner and happier planet – today and for future generations.

From the way we design our farms to the partners we work with, our decisions are guided by three simple questions:

1. Does it protect our environment?
2. Does it support our people and communities?
3. Does it make our fish – and our food system – better?

Smarter farming, lighter footprint

Our barramundi are raised in carefully managed, land-based and coastal systems that are designed to use resources efficiently and reduce environmental impact. This includes:

• Responsible water use – treating and recirculating water wherever possible, and continuously monitoring quality to protect both fish health and surrounding ecosystems.
• Optimised feed – working with leading feed partners to improve feed conversion ratios and reduce reliance on wild-caught fish ingredients.
• Waste minimisation – reducing waste at every stage of the production chain and exploring opportunities to repurpose by-products.

Healthy fish, healthy people

Sustainability isn’t just about the environment – it’s also about producing nutritious, safe and consistent food for our customers and communities.

• Our barramundi are raised under strict animal welfare and biosecurity standards.
• We prioritise traceability, so every fish can be tracked from farm to fork.
• We’re proud to provide a high-quality source of lean protein that supports healthier diets in Australia and around the world.

Supporting our people and communities

We are committed to being a responsible employer and a good neighbour in every region we operate in:

• Creating skilled, long-term jobs in regional areas
• Partnering with local organisations, chefs, retailers and community groups
• Sharing knowledge and innovation with industry and research partners

Always improving

Sustainability is not a box to tick – it’s ongoing work. MainStream continues to invest in:

• New technologies and farm designs that reduce our footprint
• Data and research to improve efficiency and welfare outcomes
• Collaborative projects that help shift the broader seafood industry towards a more sustainable future

At MainStream, growing great barramundi goes hand in hand with caring for the planet, our people and our communities. That’s the standard we hold ourselves to – every fish, every day.