The most important fish in the sea is too oily to eat

Nature · Published 3 October 2026 Swipe more like this →

In short: Atlantic menhaden are rarely served on dinner plates, yet they support the largest commercial fishery by volume on the U.S. Atlantic coast. These silvery, filter-feeding fish act as a vital energy bridge between microscopic plankton and the massive predators—like striped bass and ospreys—that define our coastal ecosystems.

Atlantic menhaden are small, schooling fish that serve as a keystone species across the East Coast, from Nova Scotia to Florida. By consuming vast quantities of phytoplankton and zooplankton, they perform a critical ecological service: they transfer energy from the base of the food web to larger marine life. This filter-feeding process also helps mitigate toxic algal blooms that can otherwise create dangerous, oxygen-depleted hypoxic conditions in estuaries like the Chesapeake Bay.

Despite their ecological importance, menhaden are primarily harvested for industrial use rather than direct human consumption. Since the 1800s, the reduction industry has processed them into fishmeal, fish oil, and fertilizer. Today, these products are essential to the aquaculture industry, which relies on menhaden-derived feed to maximize growth rates in other farmed fish. The fishery is highly efficient, utilizing purse seines to capture large schools with minimal bycatch, though management remains a complex balancing act.

The Atlantic States Marine Fisheries Commission (ASMFC) oversees the population, implementing ecological reference points that account for the needs of predators like striped bass and bluefish. While the fishery was declared depleted in 2012 due to overfishing, a 2025 stock assessment indicates the population is currently stable. Regulatory challenges persist, however, such as the 2019 compliance dispute with Virginia regarding harvest caps in the Chesapeake Bay. As scientists continue to monitor life history traits like age and growth, the debate over how many menhaden should remain in the water versus how many should be harvested remains central to coastal management.

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