Aquaculture

Aquaculture encompasses establishments primarily engaged in the farm raising of aquatic animals and plants under controlled or semi-controlled conditions. In the United States, this includes catfish farming, trout production, salmon farming, shrimp culture, crawfish farming, tilapia production, oyster and clam cultivation, and ornamental fish breeding. Catfish farming in the Mississippi Delta region — particularly Mississippi, Alabama, Arkansas, and Louisiana — has historically been the largest segment of U.S. aquaculture by volume, though the industry has contracted under pressure from imported catfish and pangasius.

The U.S. aquaculture industry operates in a global market context where the country is a major net importer of seafood. Domestic aquaculture production supplies only a small fraction of total U.S. seafood consumption, with imports — primarily shrimp, salmon, tilapia, and crab — filling the gap. This trade deficit has motivated ongoing federal and state efforts to expand domestic aquaculture production, though permitting complexity, environmental concerns, and import competition have constrained growth.

Shellfish aquaculture, including oyster and clam farming in coastal regions of the Pacific Northwest, New England, and the Gulf Coast, represents a growing and high-value segment. Marine aquaculture in offshore cage systems remains limited in U.S. waters due to regulatory and environmental challenges, though pilot projects and policy discussions continue to advance.