RAS Talk

RAStech Magazine
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  • TECHNOLOGY
  • UPDATED MONTHLY

RAS Talk is a podcast about Recirculating Aquaculture Systems (RAS) and land-based aquaculture. RAS Talk is hosted by Jean Ko Din, editor of RASTECH magazine, and Justin Henry, RAS consultant & expert. Each episode welcomes a new guest to discuss sustainable seafood production, technology developments and innovative ideas relevant to this rapidly expanding segment of the aquaculture industry.

  1. JAN 26

    Fish welfare as a design principle with Daniel Elton of Lago Sofia

    Last year, Lago Sofia became the first Chilean aquaculture farm to be WELF-CERT certified for its animal welfare standards. CTO Daniel Elton shares their approach to animal welfare in RAS systems, emphasizing the five domains defined by the OIE: feeding, environmental parameters, behaviour, and mental well-being. He also introduces a new venture, Blue Waters Aquaculture Engineering, where they can offer their technological expertise to design RAS projects for others.

    52 min

  2. JAN 21

    The data behind RAS wins in 2025 with Matt Craze of Spheric Research

    Matt Craze, lead researcher at Spheric Research, sat down with our co-hosts at the end of last year to discuss the 2025 industry trends in land-based aquaculture. He highlights a significant increase in deal flow with known investments surpassing US$2 billion. Over 90% of investments were in Atlantic salmon, with notable projects in Norway, Iceland, and Japan. The conversation also touched on the importance of a favourable regulatory environment, government support, and the need for more success stories to attract investors.

    58 min

  3. 12/15/2025

    Striped bass at scale with Dave Cerino from StriperHub & Cartaret Community College

    David Serino, director of Aquaculture Research & Development at Carteret Community College, discussed the potential of striped bass in land-based aquaculture. He highlighted the benefits of retrofitting existing sites, such as a former hog farm in North Carolina, to create a 1,500-ton annual production facility. The project aims to scale up production gradually, leveraging existing infrastructure and partnerships to enhance efficiency and reduce costs.

    58 min

  4. 11/10/2025

    Growing American-raised trout with Jesse Trushenski of Riverence Group

    This is a special episode that shares the live keynote presentation at Hatchery International's World Trout Culture Summit 2025. The Riverence Group is the leading trout producer and egg supplier in North America. Chief Science Officer Jesse Trushenski shared about the company's strategic thinking behind Riverence’s breeding principles and growing ASC-certified rainbow trout and Steelhead in land-based aquaculture farms in southern Idaho. Discover the philosophies that have underpinned their success and gain insight into Riverence’s vision for the future of trout aquaculture.

    52 min

  5. 10/06/2025

    Breeding North American salmon with Nick King of SalmoGen Company

    SalmoGen Company was first established in 2022 to develop a St. Johns River salmon strain for commercial aquaculture production. The broodstock is being developed at the National Cold Water Marine Aquaculture Center by the U.S. Department of Agriculture (USDA) program in Maine. General manager, Nick King, shares insights about establishing a new salmon genetics company for North America and how the new company is gearing up for its first commercial sale of eggs in fall 2026.

    51 min

  6. 07/04/2025

    RASTECH25 recap: RAS is open for business

    To celebrate the end of the RASTECH 2025 Conference and Trade Fair, Jean Ko Din sits down with her co-host, Justin Henry, and Howard Tang, CEO of Peritus Capital to talk about takeaways from the show in San Diego, Calif. Justin was session chair of a New Projects session that showcased new innovators in recirculating aquaculture, while Howard hosted the Investors’ Forum to talk about the investment activity in RAS for the past year.

    28 min

  7. 06/30/2025

    RASTECH25 keynote: Big or small? The road to profilability

    Success in RAS can come in all shapes and sizes. At RASTECH 2025 (June 9-10 in San Diego, Calif., USA), our keynote panel explores how their farms forged their own path of profitability, and on their own terms. Our panelists: Thorsten Vammen is the general manager of FREA Solutions, based in Denmark. FREA AS is fully recirculated facility raising rainbow trout in Felding, Denmark. Located just a few metres from FREA Solutions’ headquarters, the facility has been operating since 2014, producing over 2,800 tonnes of fish annually across two 4,000 m² buildings. Sara Rademaker is the founder and CEO of American Unagi, a glass eel recirculating hashtag#aquaculture farm in Waldoboro, Maine. American Unagi is the first and only producer and processor in the U.S. of locally sourced and harvested American glass eel. The large-scale farm was built in 2023 to produce 240 tonnes annually and plans to double its capacity within the year. Yosuke Kurihara is the co-founder and CEO of ARK Inc. based in London, U.K. and Tokyo, Japan. Established in 2020, the company developed a small-scale, 10-square-metre Closed Recirculating Aquaculture System (CRAS) known as "ARK" that supports off-the-grid aquaculture with solar power generation and a solar hot water supply. There are currently six units installed and in operation in cities across Japan.

    1h 12m

  8. 06/04/2025

    Rethinking fish waste in RAS with Trevor Gent of Alumichem

    Trevor Gent, director of Engineered Solutions at Alumichem, delves into the critical role of wastewater treatment in recirculating aquaculture systems (RAS). As a "fish poop expert," he emphasizes the importance of early planning and integration of waste management systems. He discusses various treatment options, highlighting the need for regulatory compliance and market development.

    1h 2m
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About

RAS Talk is a podcast about Recirculating Aquaculture Systems (RAS) and land-based aquaculture. RAS Talk is hosted by Jean Ko Din, editor of RASTECH magazine, and Justin Henry, RAS consultant & expert. Each episode welcomes a new guest to discuss sustainable seafood production, technology developments and innovative ideas relevant to this rapidly expanding segment of the aquaculture industry.

Information

  • Creator
    RAStech Magazine
  • Years Active
    2021 - 2026
  • Episodes
    64
  • Rating
    Clean
  • Copyright
    © Copyright 2026 RAStech Magazine
  • Show Website
    RAS Talk