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Artikel Publication logo October 21, 2021

A Look at the Only Glass Eel Farmer in the U.S.

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Women in aquaculture on the Maine waterfront are working to transform the industry through their...

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Sara Rademaker
Sara Rademaker, owner of American Unagi, stands among the glass eel tanks. Image by Grace Terry. United States, 2021.

Sara Rademaker is the president and founder of the only glass eel farm in the United States.

Typically in the U.S. elversーyoung eelsーare caught and then sent to countries like China to be raised and then purchased back full-sized. These young eels are extremely valuable and can be sold for up to $2,000 per pound.

However, through American Unagi, a fishery in Maine, Rademaker raises elvers to full market size.

Rademaker started the company back in 2014 after working in Kenya at a large commercial fishery. She came back home to Maine feeling as though this was her time to start her own aquaculture business. After toying with several ideas, she settled on eels.

“I just said, ‘Why isn't anybody doing that?’” Rademaker said. “In Europe, they're growing eels in land-based aquaculture. They had at that point been doing that for like 30 years. I said, the technology exists, the markets are here, we have the resources. We should be doing this here in the states.”

According to Rademaker, there are a couple of reasons why it had not been done in the States before. One reason is that sushi consumption in the United States has only exploded in the last 30 years.

“People weren't eating eel in the way that they are now,” Rademaker said. “Americans are way more familiar with eel. It's oftentimes people’s starter sushi because it's one of the few that are cooked.”

The second reason is that while the technology has existed, raising the eels requires a certain skill set.

“Aquaculture businesses are tough and they require a certain level of expertise,” Rademaker said. “That's the other piece of the puzzle: The right person hadn’t then come around to start the business.”

According to Rademaker, the eels take about seven months to two years to reach full size at her facility. This is much shorter than in the wild, where they take at least five years and as long as 30 years.

Glass eels
Glass eels do not grow at a consistent rate. Some take as little as seven months to reach maturity while others take up to two years. Image by Grace Terry. United States, 2021.

As for the future, Rademaker is currently working on moving the company from Franklin to Waldoboro, to a 27,000 square foot facility in which she hopes she and her team will be able to raise over 2 million eels a year. Rademaker says one of her favorite parts about the journey is working with the eels.

“I am so thankful to work with such an incredible fish,” Rademaker said. “A lot of my fondest memories involve being constantly amazed by these fish.”

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