Research brief: Smarter feed, stronger returns for NH fish farmers

UNH scientist Karolina Kwasek is studying how to make nutrition for farmed fishes less costly and more sustainable — work that could have important implications for the predominantly small-scale aquaculture operations in New Hampshire, which struggle to be profitable.

The work, funded by the NH Agricultural Experiment Station, could lead to a welcome expansion of aquaculture in the state, which would both help sustain the appetites of regional seafood customers and support a thriving recreational fishing industry, as many hatcheries stock streams for recreational fishing.

Kwasek is investigating how to meet the nutritional needs of larval fishes with food that is more efficient and dependable than the live food that hatcheries currently feed, such as food pellets that can be stored until needed. She is also looking to broaden nutritional options once the larvae mature and begin transitioning to their adult diets. This approach will help the industry utilize more cost-effective ingredients and reduce reliance on natural resources.

“I’m working with local producers and New Hampshire Fish and Game to learn more about the nutrition and feeding problems they’re facing,” says Kwasek. “We hope [our findings] will provide more options and encourage diversification in local aquaculture.”