Rephonic
Artwork for RAS Talk
Recirculating Aquaculture Systems
Vertical Oceans
Aquaculture
Shrimp Farming
Sustainable Seafood Production
Commissioning Process
Rastech Conference
Recirculating Aquaculture Systems (RAS)
Rastech Conference 2024
Pure Salmon Technology
Rastech 2024 Conference
Aquatic Equipment & Design
Water Biosecurity
Sustainable Aquaculture
Automation In Aquaculture
Aquaculture Technology Development
Fish Welfare
Aquaculture Technology
Technological Solutions For Food Security
Data Science In Agriculture

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.

PublishesTwice monthlyEpisodes68Founded5 years ago
Number of ListenersCategories
TechnologyBusiness

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Artwork for RAS Talk

Latest Episodes

Marcelo Shei, owner of Altamar Sistemos Aquáticos, discussed his extensive experience in the RAS industry in Brazil and Latin America. He highlighted major projects with marine species, including Genomar’s tilapia genetics facility. He also shares hi... more

Steffen Nielsen is CEO of Danforel, one of Europe’s largest producers of rainbow trout located in Grindsted, Denmark. The farm produces about 4,000 metric tons per year. In this episode, Steffen highlights the farm’s close relationship with its owner... more

CEO Ragnar Joensen discusses the Nordic Aqua Partners project in Ningbo, China. He highlights the facility’s strategic location near Shanghai which allows them access to 800 million consumers within 12 hours. The Atlantic salmon project started with ... more

Carlos Lopez, commercial director of Spring Genetics in Miami, Fla., explains the company's history, its focus on growth and disease resistance, and the importance of biosecurity. He details the facility's operations, including the use of UV-treated ... more

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Recent Guests

Steffen Nielsen
CEO of Danforel (owned by Aller Aqua after 2022 acquisition)
Danforel / Aller Aqua
Episode: Integrating feed and farming with Steffen Nielsen of Danforel
Ragnar Joensen
Executive at Nordic Aqua Partners who led the China project
Nordic Aqua Partners
Episode: China’s aquaculture frontier with Ragnar Joensen of Nordic Aqua Partners
Carlos Lopez
Commercial director at Spring Genetics
Spring Genetics
Episode: Chasing the perfect tilapia farm with Carlos Lopez of Spring Genetics
Daniel Elton
Chief Technology Officer at Lago Sofia
Lago Sofia
Episode: Fish welfare as a design principle with Daniel Elton of Lago Sofia
Matt Craze
Founder/CEO of Spheric Research
Spheric Research
Episode: The data behind RAS wins in 2025 with Matt Craze of Spheric Research
David Serino
Director of Aquaculture Research and Development at Carteret Community College
Carteret Community College
Episode: Striped bass at scale with Dave Cerino from StriperHub & Cartaret Community College
Jesse Trushenski
Chief Science Officer, Riverence Group
Riverence Group
Episode: Growing American-raised trout with Jesse Trushenski of Riverence Group
Nick King
General Manager, SalmoGen Company
SalmoGen Company
Episode: Breeding North American salmon with Nick King of SalmoGen Company
Tommi Mäkinen
CEO of Finnforel Technologies
Finnforel Technologies
Episode: Disrupting the sustainable value chain with Tommi Mäkinen of Finnforel Technologies

Hosts

Justin Henry
RAS consultant & expert
Jean Ko Din
Editor of RAS Tech Magazine

Reviews

5.0 out of 5 stars from 6 ratings
  • Good podcast for learning RAS and making connections

    Wonderful way to learn about RAS from experts. Ive been looking into a commercial RAS setup for awhile and appreciate their expertise

    Apple Podcasts
    5
    night m
    United States5 years ago

Listeners Say

Key themes from listener reviews, highlighting what works and what could be improved about the show.

The podcast garners positive feedback for its engaging content and insights, particularly helpful for those looking to start or operate RAS systems.
Listeners appreciate the in-depth discussions on sustainable aquaculture, noting it as a wonderful way to learn from experts in the industry.

Chart Rankings

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Apple Podcasts
#227
Ireland/Technology

Talking Points

Recent interactions between the hosts and their guests.

Fish welfare as a design principle with Daniel Elton of Lago Sofia
Q: How does the individual RAS (IRAS) concept support biosecurity and flexibility with multiple client crews?
IRAS assigns a dedicated water treatment system to each tank, enabling independent biosecurity units, easier containment of outbreaks, and customization for different client needs without affecting other tanks.
Fish welfare as a design principle with Daniel Elton of Lago Sofia
Q: What are the five welfare domains and why are they foundational to Lago Sofia's design philosophy?
They are feeding, health, environmental parameters, behavior, and a mental state defined by absence of fear, hunger, and pain; Lago Sofia treats these as the foundation of its welfare-centric design, influencing everything from tank setup to monitoring and management.
Growing American-raised trout with Jesse Trushenski of Riverence Group
Q: How can different stakeholders collaborate to make a difference in the seafood deficit, and can RAS or partial RAS become more common?
A multi-system approach is needed, with RAS and PRAS playing a key role alongside flow-through; collaboration across industry and regulators will accelerate adoption, share knowledge, and optimize siting and resource use to meet future demand.
Growing American-raised trout with Jesse Trushenski of Riverence Group
Q: Do you sell fingerlings as well or only eggs, and are there Riverence hatcheries shipping eggs to customers on the East Coast?
We only ship eggs due to biosecurity considerations; eggs can be sanitized and treated before shipment, whereas moving live fingerlings faces higher biosecurity barriers and regulatory constraints; fingerlings raised in Idaho stay on-site.
Growing American-raised trout with Jesse Trushenski of Riverence Group
Q: As a Canadian buyer of Riverence eggs, how have tariffs impacted the business?
Tariffs mainly introduce uncertainty and fluctuating costs, which complicate pricing and logistics for egg movements; the unpredictable timing and amounts create a burden on operations, though clear, known tariffs are easier to manage.

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Frequently Asked Questions About RAS Talk

What is RAS Talk about and what kind of topics does it cover?

Focuses on Recirculating Aquaculture Systems (RAS) and land-based aquaculture, examining sustainable seafood production and the innovative technologies surrounding it. Listeners can expect to hear from industry leaders and experts discussing current trends, future prospects, and the various challenges faced in aquaculture. The informative dialogues often cover topics such as sustainability, food security, and operational efficiency in aquaculture systems, making it a valuable resource for those interested in the intersection of technology and food production.

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Which podcasts are similar to RAS Talk?

These podcasts share a similar audience with RAS Talk:

1. All-In with Chamath, Jason, Sacks & Friedberg
2. The Rest Is History

How many episodes of RAS Talk are there?

RAS Talk launched 5 years ago and published 68 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

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What guests have appeared on RAS Talk?

Recent guests on RAS Talk include:

1. Steffen Nielsen
2. Ragnar Joensen
3. Carlos Lopez
4. Daniel Elton
5. Matt Craze
6. David Serino
7. Jesse Trushenski
8. Nick King

To view more recent guests and their details, simply upgrade your Rephonic account. You'll also get access to a typical guest profile to help you decide if the show is worth pitching.

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