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 monthlyEpisodes69Founded5 years ago
Number of ListenersCategories
TechnologyBusiness

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Artwork for RAS Talk

Latest Episodes

Rob van de Ven, managing director of Landing Aquaculture, discusses his extensive experience in the RAS industry, emphasizing innovation and tackling challenging projects. He highlighted the importance of tailoring RAS systems to specific species. He... more

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

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Recent Guests

Rob van de Ven
Guest from Landing Aquaculture discussing RAS design beyond textbooks
Landing Aquaculture
Episode: What textbooks don’t teach about RAS with Rob van de Ven of Landing Aquaculture
Marcelo Shei
Co-founder and owner of Altamar Sistemas Aquáticos
Altamar Sistemas Aquáticos (Brazil)
Episode: Growing RAS in Latin America with Marcelo Shei from Altamar Sistemos Aquáticos
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

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

How this podcast ranks in the Apple Podcasts, Spotify and YouTube charts.

Apple Podcasts
#214
South Korea/Technology

Talking Points

Recent interactions between the hosts and their guests.

What textbooks don’t teach about RAS with Rob van de Ven of Landing Aquaculture
Q: What is the most promising species in RAS that the industry should be looking at?
The guest emphasizes meager as highly promising due to the significant work still needed and the potential for growth, with grouper and mahi-mahi also cited as intriguing candidates, alongside rainbow trout as a climate-appropriate option.
Growing RAS in Latin America with Marcelo Shei from Altamar Sistemos Aquáticos
Q: What is your view on capex optimization in Brazilian RAS projects?
Using larger, fewer tanks and maximizing gravity-driven processes, plus leveraging local labor for installation reduces capital expenditure and speeds up local workforce participation.
Growing RAS in Latin America with Marcelo Shei from Altamar Sistemos Aquáticos
Q: How do you approach differences between aquaculture systems and public aquariums or zoos during design?
The core filtration and water-quality goals are similar, but aquariums demand higher water clarity and lower nitrate targets; the equipment scales and refinement differ to meet the needs of visually appealing, species-specific environments.
Growing RAS in Latin America with Marcelo Shei from Altamar Sistemos Aquáticos
Q: Can you give us a bit of an overview of your company and the work you do in RAS?
Altamar began as a system integrator in the Brazilian market, gradually moving into equipment design and manufacturing to address local supply gaps, with a focus on filtration, pumps, and protein skimmers for both aquaculture and other sectors.
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.

Audience Metrics

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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. Fish n' Bits - The Aquaculture Data Intelligence Podcast
2. This American Life
3. All-In with Chamath, Jason, Sacks & Friedberg
4. Freakonomics Radio
5. Planet Money

How many episodes of RAS Talk are there?

RAS Talk launched 5 years ago and published 69 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

How do I contact RAS Talk?

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What guests have appeared on RAS Talk?

Recent guests on RAS Talk include:

1. Rob van de Ven
2. Marcelo Shei
3. Steffen Nielsen
4. Ragnar Joensen
5. Carlos Lopez
6. Daniel Elton
7. Matt Craze
8. David Serino

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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