Saving Seafood

Cost barriers keeping RAS out of emerging markets

November 27, 2023 — The high capital expenditure and energy consumption of recirculating aquaculture systems (RAS) is hampering uptake of the fish-farming technology in many emerging markets.

BioMar Group Global Marketing Director Katherine Bryar told SeafoodSource that RAS technology remains expensive venture that also requires advanced knowledge of complex systems for it to be viable. The significant upfront costs and cutting-edge nature of much of the technology makes it a poor choice for most developing markets like those in Africa, she told SeafoodSource.

Read the full article at SeafoodSource

Taking the sea out of seafood

March 15, 2019 — Land-based aquaculture can sound like a mirage — shrimp farms in the desert, salmon swimming “upstream” in an alpine village tank, tilapia swishing over the plains. And for a long time, ample production of sea delicacies in recirculating aquaculture systems (RAS) has been more dream than reality. Yet the technology and its innovators steadily have gained momentum and finally may be hitting their tipping point.

The allure of fish grown on land is easy to understand: Like all aquaculture, it reduces demand for wild fish, but unlike with sea-based pens, closed-loop RAS farms (PDF) run no risk of fish escaping to dilute the native gene pool, spread diseases or discharge waste and antibiotics into the wild. RAS farmers have near-full control over growing conditions, so they can optimize for growth and quality. And with its amenability to unlikely locations, RAS can sit near major consumer markets, providing fresh local seafood even when the shore is hundreds of miles away.

So why aren’t we eating it already? RAS entrepreneurs face three big challenges: energy; contamination risks; and money. Mimicking a natural system within strictly regulated parameters is an energy-intensive endeavor, and sustainability (not to mention costs) demands locating RAS facilities next to cheap, abundant energy sources. A pathogen let loose in a closed system can be a disaster, so RAS farmers have to be extra scrupulous about avoiding contamination.

Money may be the biggest hurdle: RAS operations need high volumes and relatively long ramp-ups to reach profitability, and the pile of patient capital needed to build and grow large, high-tech facilities can be as elusive as Moby Dick.

Read the full op-ed at GreenBiz