The Steelhead Trout Story

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school of steelhead trout swimming underwater

Steelhead trout aquaculture has been the primary focus of NH Sea Grant's AquaFort & IMTA research efforts.

Rainbow trout are hatched and raised at a local hatchery in Ossipee. Here, they swim in long raceways with flowing freshwater. At eight months of age or 10" in length, they can be transferred to growout cages in the ocean. Trout have the remarkable ability to acclimate from freshwater to seawater and can tolerate a wide variety of temperatures. Once in seawater, they are referred to as steelhead trout. In warm coastal waters, steelheads can grow to five pounds in seven months. 

How does integrated multi-trophic aquaculture work?
Small-scale steelhead trout aquaculture in NH
What is the UNH AquaFort project?
Farming fish in New Hampshire

Media Coverage

Jeanne Shaheen U.S. Senator for New Hampshire, October 16, 2018
"Shaheen, Hassan & Shea-Porter Announce More Than $700,000 for UNH Aquaculture Training Program"

Portland Press Herald, October 14, 2018
"In New Hampshire, an experiment in farming steelhead trout"

The Boston Globe, December 18, 2017
"When a chef and a marine biologist team up, everyone wins"


Michael Chambers, Ph.D.
Aquaculture Extension Specialist
(603) 862-3394