RAS Talk
Episodes
China’s aquaculture frontier with Ragnar Joensen of Nordic Aqua Partners
26 Mar 2026
Contributed by Lukas
CEO Ragnar Joensen discusses the Nordic Aqua Partners project in Ningbo, China. He hi...
Chasing the perfect tilapia farm with Carlos Lopez of Spring Genetics
27 Feb 2026
Contributed by Lukas
Carlos Lopez, commercial director of Spring Genetics in Miami, Fla., explains the company's history, its focus on growth and disease resistance, and t...
Fish welfare as a design principle with Daniel Elton of Lago Sofia
26 Jan 2026
Contributed by Lukas
Last year, Lago Sofia became the first Chilean aquaculture farm to be WELF-CERT certified for its animal welfare standards. CTO Daniel Elton shares th...
The data behind RAS wins in 2025 with Matt Craze of Spheric Research
21 Jan 2026
Contributed by Lukas
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 ...
Striped bass at scale with Dave Cerino from StriperHub & Cartaret Community College
15 Dec 2025
Contributed by Lukas
David Serino, director of Aquaculture Research & Development at Carteret Community College, discussed the potential of striped bass in land-based ...
Growing American-raised trout with Jesse Trushenski of Riverence Group
10 Nov 2025
Contributed by Lukas
This is a special episode that shares the live keynote presentation at Hatchery International's World Trout Culture Summit 2025. The Riverence Gr...
Breeding North American salmon with Nick King of SalmoGen Company
06 Oct 2025
Contributed by Lukas
SalmoGen Company was first established in 2022 to develop a St. Johns River salmon strain for commercial aquaculture production. The broodstock is bei...
RASTECH25 recap: RAS is open for business
04 Jul 2025
Contributed by Lukas
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 Peri...
RASTECH25 keynote: Big or small? The road to profilability
30 Jun 2025
Contributed by Lukas
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 for...
Rethinking fish waste in RAS with Trevor Gent of Alumichem
04 Jun 2025
Contributed by Lukas
Trevor Gent, director of Engineered Solutions at Alumichem, delves into the critical role of wastewater treatment in recirculating aquaculture systems...
Growing with smolt RAS with Bendik Fyhn Terjesen at Cermaq Global
14 May 2025
Contributed by Lukas
Bendik Fyhn Terjesen is the head of Land-Based Innovation and Development at Cermaq Global. He shares how one of the largest traditional salmon net pe...
Expect the unexpected in RAS with Kim Hieronymus Lyhne of Danish Salmon
10 Feb 2025
Contributed by Lukas
Danish Salmon, founded in 2009, is one of the oldest RAS companies for Atlantic salmon. The company in Hirtshals, Denmark faced numerous challenges, i...
Simple and buildable RAS projects with John Hansen at Hansen International Business Consulting
16 Jan 2025
Contributed by Lukas
John Hansen, a project director in the RAS industry, discussed his experience and responsibilities, including managing design and construction for lan...
Icelandic community and collaboration with Chris Malanka and Óskar Jósúason from Laxey
18 Nov 2024
Contributed by Lukas
Laxey's freshwater manager, Chris Malanka, manages four RAS facilities, focusing on fish health, production planning, and water quality. This RAS proj...
Disrupting the sustainable value chain with Tommi Mäkinen of Finnforel Technologies
16 Oct 2024
Contributed by Lukas
Tommi Mäkinen, chief technology officer and head of Finnforel Technologies, talks about the company's philosophy of making each process of rainbow tr...
Balancing biology and business with Fabian Riedel and Bert Wecker of Oceanloop
16 Sep 2024
Contributed by Lukas
Fabian Rydell and Bert Wecker, the co-CEOs of Oceanloop Group, share about their German-based company raising shrimp and grouper in their unique verti...
Natural advantages of flowthrough with Martin Rasmussen of Andfjord Salmon
28 Aug 2024
Contributed by Lukas
Reflecting on the company’s first year of production, CEO Martin Rasmussen emphasizes Andfjord Salmon’s concept of combining the natural bene...
RASTECH24: Commissioning to success with James Tuller of Pure Salmon Technology
12 Jul 2024
Contributed by Lukas
James Peter Henry Tuller is the commissioning manager at Norway-based Pure Salmon Technology. On the second day (June 6) of the RASTECH 2024 Conferenc...
RASTECH24: A vision for RAS' future with Ohad Maiman and Thue Holm of Aqua Founders Capital
24 Jun 2024
Contributed by Lukas
Aqua Founders Capital managing directors, Ohad Maiman and Thue Holm, share insights on the challenges they hope to address in the recirculating aquacu...
“5 To Watch” at RASTECH 2024: Xylem, Booths 22 & 23
16 May 2024
Contributed by Lukas
In RASTECH’s new mini-podcast series, “5 To Watch”, recorded ahead of RASTECH 2024 in Charlotte, North Carolina (Jun 5-6), host Mari-Len De Guzm...
“5 To Watch” at RASTECH 2024: Octaform, Booth 9
30 Apr 2024
Contributed by Lukas
In our new mini-series, “5 To Watch”, recorded ahead of RASTECH 2024 in Charlotte, N.C., USA (June 5-6, 2024), host Mari-Len De Guzman talks with ...
“5 To Watch” at RASTECH 2024: Aquatic Equipment & Design, Booth 24
30 Apr 2024
Contributed by Lukas
In this new mini-series, “5 To Watch”, recorded ahead of RASTECH 2024 in Charlotte, N.C., USA (June 5-6, 2024), host Mari-Len De Guzman talks with...
“5 To Watch” at RASTECH 2024: Aquaculture Systems Technologies, Booth 34
30 Apr 2024
Contributed by Lukas
In our new mini-series, “5 To Watch”, recorded ahead of RASTECH 2024 in Charlotte, North Carolina (June 5-6, 2024), host Mari-Len De Guzman talks ...
“5 To Watch” at RASTECH 2024: ATLANTIUM, Booth 57
30 Apr 2024
Contributed by Lukas
In a new mini-series, “5 To Watch”, recorded ahead of the RASTECH 2024 conference in Charlotte, N.C., USA (June 5-6, 2024), host Mari-Len De Guzma...
The ongoing study of off-flavour with John Davidson of The Freshwater Institute
17 Apr 2024
Contributed by Lukas
Research scientist, John Davidson, and The Freshwater Institute team are conducting some of the leading research around understanding off-flavour in r...
Optimizing control in shrimp RAS with John Diener of Vertical Oceans
15 Mar 2024
Contributed by Lukas
Vertical Oceans is a unique recirculating aquaculture system (RAS) for shrimp because it touts itself to be modular, has zero discharge and is almost ...
The start of a Florida aquaculture hub with Megan Sorby of Pine Island Redfish
19 Feb 2024
Contributed by Lukas
Florida is home to both red drum fish and red mangroves. Megan Sorby, CEO and founder of Pine Island Redfish, has a vision to sustainably farm both in...
Setting a standard for fish welfare with Borghild Hillestad of Viking Aqua
12 Jan 2024
Contributed by Lukas
Viking Aqua wants to build the "next generation RAS for Atlantic salmon," planning a 33,000-ton facility in Skipavika, Norway. In this episode, Borghi...
Disrupting on a smaller scale with Yosuke Kurihara of ARK Inc.
20 Dec 2023
Contributed by Lukas
Although reconstruction in the area is over, Fukushima continues to live with the aftermath of the 2011 nuclear accident and its impact on its reputat...
Eel entrepreneurship with Sara Rademaker of American Unagi
28 Nov 2023
Contributed by Lukas
Sara Rademaker is the founder and CEO of American Unagi, a glass eel recirculating aquaculture farm in Maine. She shares the journey of how she starte...
World Trout Culture Summit 2023: RAS technology
16 Nov 2023
Contributed by Lukas
Hatchery International hosted its first World Trout Culture Summit on Oct. 18, 2023. The virtual event gathered experts across the aqua...
Can RAS transform shrimp farming? with George Chamberlain from The Center for Responsible Seafood
30 Oct 2023
Contributed by Lukas
This episode was recorded about a month after The Center for Responsible Seafood (TCRS) hosted its inaugural Shrimp Summit (July 24-26, 2023) at Ho Ch...
Sustainability is more than a name with David Roberts of Sustainable Blue
24 Oct 2023
Contributed by Lukas
Sustainable Blue has captured Washington State's interest for its zero wastewater discharge system for Atlantic salmon. David Roberts, chief sustainab...
Grow sustainable U.S. shrimp with Steve Sutton of TransparentSea
14 Aug 2023
Contributed by Lukas
Just 20 mins. from downtown Los Angeles, Steve Sutton established an indoor shrimp RAS farm with a mission to grow clean shrimp products for the U.S. ...
Leading with confidence with Trond Håkon Schaug-Pettersen of Salmon Evolution
14 Jul 2023
Contributed by Lukas
Salmon Evolution is one of the few success stories that the RAS industry can point to and as it looks ahead to the next phase, CEO Trond Håkon Schaug...
RASTECH23: Lessons Learned live keynote recording
18 May 2023
Contributed by Lukas
The RAS industry is not for the faint of heart. The purpose of this “Lessons learned” keynote is to identify those challenges we are facing right ...
Honing blue crab RAS with Rodrigo Mezerhane of Blue Star Foods
10 Apr 2023
Contributed by Lukas
Rodrigo Mezerhane is the senior project manager at Blue Star Foods in the United States and his latest project is an interesting venture into a unique...
Changing the system in Korea with Woo-Jai Lee of BluGen
27 Mar 2023
Contributed by Lukas
After cultivating his genomics expertise in the United States and in Norway, Woo-Jai Lee returns to his homeland in South Korea to start an olive flou...
The rise of Japanese RAS with Dharma Rajeswaran of Proximar Seafood
20 Feb 2023
Contributed by Lukas
More commercial-size RAS projects are propping up in Japan. In this episode, we get an inside look at one of the largest projects with Dharma Rajeswar...
Next generation farming with Kevin Hoffman of Onalaska High School
30 Jan 2023
Contributed by Lukas
It truly takes a village to raise the next generation of recirculating aquaculture farmers. Kevin Hoffman is the instructor and program manager for On...
Building community around RAS with Dianna Fletcher of Kingfish Maine
25 Nov 2022
Contributed by Lukas
Last July, Kingfish Maine was forced to go head-to-head against an anti-aquaculture group that wanted to put a stop to all aquaculture development in ...
Ensuring food security with Esben Johnsen of Singapore RAS
20 Sep 2022
Contributed by Lukas
When the island country of Singapore imports more than 90 per cent of its food supply, this new RAS project hopes to be a local solution. Esben Johnse...
Circular food with Miguel Portus at Lago Sofia
08 Aug 2022
Contributed by Lukas
Lago Sofia’s chief executive and general manager, Miguel Portus O., shares the company’s philosophy in making the most of all its resources, not j...
Hard path to innovation with Johan Andreassen of Atlantic Sapphire
30 Jun 2022
Contributed by Lukas
Atlantic Sapphire CEO Johan Andreassen called 2021 the company’s “Annus Horribilis.” From losing the chillers in Miami to the devastating fire i...
Building Ukrainian RAS with Lubomir Haidamaka of Vismar Aqua
06 Jun 2022
Contributed by Lukas
Vismar Aqua is a Ukrainian RAS design firm that built the largest RAS shrimp farm in Europe, Merman’s House. When Russia’s invasion forced the far...
Talking aquaponics with Tracy Nazzaro of Traders Hill Farm
07 Feb 2022
Contributed by Lukas
Aquaponics is often described as the combination of recirculating aquaculture with hydroponics. Many favour it as the ultimate circular food productio...
An inside look at Australia’s aquaculture industry
23 Dec 2021
Contributed by Lukas
Past RAS Talk episodes have had a particular focus on various salmon and trout species because they’re known to be some of the more ‘established’...
The Seafood Nutrition Partnership – Achieving goals through RAS
25 Oct 2021
Contributed by Lukas
Looking to raise awareness and educate Americans of the benefits of regularly eating seafood to achieve a healthier diet, as well as advocate for the ...
RAS in public fish hatcheries: What’s taking so long?
30 Sep 2021
Contributed by Lukas
Public fish hatcheries have a long history in North America, with many culture methods and innovations used in today’s commercial aquaculture indust...
Atlantic salmon genetics: Where are we, and where can we improve?
30 Aug 2021
Contributed by Lukas
The RAS-produced Atlantic salmon sector has come a long way since its inception in the late 1990s, with the industry has continuously striving for suc...
What’s the deal with shrimp RAS?
28 Jul 2021
Contributed by Lukas
With much talk, research and new projects circulating the land-based shrimp production sector, RAS Talk was curious to gain perspective from a shrimp ...
RAS Talk: Exploring technology development with Professor Yonathan Zohar
18 Jun 2021
Contributed by Lukas
This week, RAS Talk host Brian Vinci had the opportunity to speak with Yonathan Zohar, Professor and Chair of the Department of Marine Biotechnology a...
RAS Talk: Profile on Matorka
14 May 2021
Contributed by Lukas
In this episode, hosts Mari-Len De Guzman and Brian Vinci talk with Árni Páll Einarsson, CEO of Matorka, a pioneer in land-based production of arcti...
RAS Talk: Promoting sustainable seafood
15 Apr 2021
Contributed by Lukas
Bridging the gap between seafood producers and consumers is key to pushing the agenda of sustainability in the aquaculture industry. In this episode, ...
RAS Talk: Hunger games
11 Mar 2021
Contributed by Lukas
Feeds are a critical component of any RAS production environment – it can make or break the health of both fish and systems. This episode provides a...
RAS Talk: Precision aquaculture
11 Feb 2021
Contributed by Lukas
Featuring the tech brains behind the innovative startup ReelData, this episode discusses the various applications of artificial intelligence and machi...
RAS Talk: Outlook 2021
06 Jan 2021
Contributed by Lukas
RAS Talk hosts Mari-Len De Guzman and Brian Vinci talk about the year that was and the year ahead. From COVID-19 and RAS milestones to trends in susta...
RAS Talk: Show me the money
17 Dec 2020
Contributed by Lukas
In this RAS Talk episode hosts Mari-Len De Guzman and Brian Vinci talk about the various aspects of investing in RAS. It’s an engaging discussion ab...
RAS Talk: Let’s get technical
12 Nov 2020
Contributed by Lukas
RAS engineering and design specialist Marc Sorensen takes us through the history and evolution of RAS in aquaculture. Co-host Brian Vinci also provide...
RAS Talk: Ideal Fish
15 Oct 2020
Contributed by Lukas
It started out as a small RAS operation in his home basement, today founder Eric Pedersen’s Ideal Fish is successfully producing Branzino for the do...
RAS Talk: Women in RAS
25 Sep 2020
Contributed by Lukas
Women account for 70 percent of the world’s seafood workers. However, many of them work in entry level, low-paying jobs and very few are leadership ...
RAS Talk: Covid 19 and the ‘new normal’
17 Sep 2020
Contributed by Lukas
The aquaculture industry continues to face challenges brought on by the Covid-19 pandemic. From social distancing protocols to mandatory work-from-hom...
RAS Talk: Keys to mitigating off-flavour in RAS-raised fish
20 Aug 2020
Contributed by Lukas
As RAS operations across the world ramp up, it is increasingly important to effectively address off-flavour issues in RAS-grown fish. The research is ...
RAS Talk Bonus Episode: Investor Profile
16 Jul 2020
Contributed by Lukas
The potential of RAS for sustainability and financial gains is making it an appealing proposition for investors. At the recent Aquaculture America con...
RAS Talk: Made in Maine
21 Jun 2020
Contributed by Lukas
All eyes are on Maine as an emerging destination for RAS development projects. In this episode, Erik Heim, president of Nordic Aquafarms, takes us thr...
RAS Talk: Talent Management
19 Jun 2020
Contributed by Lukas
Do you have what it takes to work in a RAS operation? This episode of RAS Talk tackles the current challenges as well as strategies for hiring the rig...