June 6, 2018 — WASHINGTON — Through new techniques and technologies, farming fish is becoming increasingly efficient, leading aquaculture experts tell Saving Seafood in a new video.

“With a whole range of factors – improved nutritional knowledge, better management techniques of feeding on the farm, and all of that – [the fish in–fish out] ratio has gone down,” says Andrew Jackson, Chairman of IFFO RS.

“For every 0.7 kilos of fish in, you get a kilo of fish out,” says Dan Lee, Standards Coordinator for the Global Aquaculture Alliance’s Best Aquaculture Practices Program. “So that’s becoming very favorable towards aquaculture productivity.”

In the case of salmon farming, nutritionists are using alternative ingredients, including plant proteins like soy, and mixing canola and other vegetable oils in with pure fish oil. This has helped lowered the percentage of marine ingredients in fish feed to about 25 percent of farmed salmon diets, and projections are that this will drop below 10 percent by 2025.

“They’ve figured out that the key to being successful and profitable and sustainable is not necessarily to catch more fish, it’s to extract as much value as possible out of the right amount of fish,” says Tim Fitzgerald, Director of the Environmental Defense Fund’s Impact Division.

These improvements have made farming fish one of the most sustainable forms of protein production, experts tell Saving Seafood.

“When you’re growing chickens or pigs or cattle, the transformation between the feed and the [farmed product] is much more inefficient than with fish,” says Manuel Barange, Director of Fisheries and Aquaculture at the UN Food and Agriculture Organization. “So if we have to feed any animal for us to eat, it makes sense to do that with fish. It’s more efficient.”

The video is the second in a series, Aquaculture Today, in which Saving Seafood interviews leading aquaculture experts on the latest advances in farmed fish, and its role in the world. Saving Seafood released a video yesterday on aquaculture’s role in feeding the world’s growing population.

In addition to Mr. Jackson, Mr. Lee, Mr. Fitzgerald, and Mr. Barange, the video also features Julien Stevens, Researcher at Kampachi Farms, and Neil Auchterlonie, Technical Director at IFFO.

Interviews for Aquaculture Today were conducted by Saving Seafood at the 2017 SeaWeb Seafood Summit in Seattle, Washington.