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|Cladistically included but traditionally excluded taxa|
all other genera in the family Clupeidae
Menhaden, also known as mossbunker and bunker, are forage fish of the genera Brevoortia and Ethmidium, two genera of marine fish in the family Clupeidae. Menhaden is a blend of poghaden (pogy for short) and an Algonquian word akin to Narragansett munnawhatteaûg, derived from munnohquohteau ("he fertilizes"), referring to their use of the fish as fertilizer.  It is generally thought that Pilgrims were advised by Tisquantum (also known as Squanto) to plant menhaden with their crops. 
Menhaden are flat and have soft flesh and a deeply forked tail. They rarely exceed 15 inches (38 cm) in length, and have a varied weight range. Gulf menhaden and Atlantic menhaden are small oily-fleshed fish, bright silver, and characterized by a series of smaller spots behind the main, humeral spot. They tend to have larger scales than yellowfin menhaden and finescale menhaden. In addition, yellowfin menhaden tail rays are a bright yellow in contrast to those of the Atlantic menhaden.
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Recent taxonomic work using DNA comparisons have organized the North American menhadens into large-scaled (Gulf and Atlantic menhaden) and small-scaled (Finescale and Yellowfin menhaden) designations. 
The menhaden consist of two genera and seven species:
T. N. Gill, 1861
- Brevoortia aurea ( Spix & Agassiz, 1829) (Brazilian menhaden)
- Brevoortia gunteri Hildebrand, 1948 (Finescale menhaden)
- Brevoortia patronus Goode, 1878 (Gulf menhaden)
- Brevoortia pectinata ( Jenyns, 1842) (Argentine menhaden)
- Brevoortia smithi Hildebrand, 1941 (Yellowfin menhaden)
- Brevoortia tyrannus ( Latrobe, 1802) (Atlantic menhaden)
- Genus Ethmidium W. F. Thompson, 1916
- Finescale menhaden range from the Yucatán to Louisiana
- Yellowfin menhaden range from Louisiana to Virginia
- Gulf menhaden range from the Yucatán Peninsula, Mexico to Tampa Bay, Florida
- Atlantic menhaden range from Jupiter Inlet, Florida, to Nova Scotia; Atlantic menhaden seasonally migrate along the coast; in June, mature adults typically are in the northern portion of the coastline with sub-adults and juveniles located in the southern portion
- The various species of menhaden occur anywhere from estuarine waters outward to the continental shelf; menhaden grow in less saline waters of estuaries and may be found in bays and lagoons, as well as at river mouths; adults appear to prefer water temperatures near 18 °C
Menhaden are filter feeders that travel in large, slow-moving, and tightly-packed schools with open mouths. Filter feeders typically take into their open mouths "materials in the same proportions as they occur in ambient waters".  Menhaden have two main sources of food: phytoplankton and zooplankton. A menhaden's diet varies considerably over the course of its lifetime, and is directly related to its size. The smallest menhaden, typically those under one year old, eat primarily phytoplankton. After that age, adult menhaden gradually shift to a diet comprised almost exclusively of zooplankton. 
Menhaden are omnivorous filter feeders, feeding by straining plankton and algae from water. Along with oysters, which filter water on the seabed, menhaden play a key role in the food chain in estuaries and bays.  Atlantic menhaden are an important link between plankton and upper level predators. Because of their filter feeding abilities, "menhaden consume and redistribute a significant amount of energy within and between Chesapeake Bay and other estuaries, and the coastal ocean."  Because they play this role, and their abundance, menhaden are an invaluable prey species for many predatory fish, such as striped bass, bluefish, mackerel, flounder, tuna, drums, and sharks. They are also a very important food source for many birds, including egrets, ospreys, seagulls, northern gannets, pelicans, and herons.
In 2012, the Atlantic States Marine Fisheries Commission declared that the Atlantic menhaden was depleted due to overfishing. The decision was driven by issues with water quality in the Chesapeake Bay and failing efforts to re-introduce predator species, due to lack of menhaden on which they could feed. 
Menhaden are not used directly for food. They are processed into fish oil and fish meal that are used as food ingredients, animal feed, and dietary supplements.  The flesh has a high omega-3 fat content. Fish oil made from menhaden also is used as a raw material for products such as lipstick. 
According to the Virginia Institute of Marine Science (VIMS), there are two established commercial fisheries for menhaden. The first is known as a reduction fishery. The second is known as a bait fishery, which harvests menhaden for the use of both commercial and recreational fishermen. Commercial fishermen, especially crabbers in the Chesapeake Bay area, use menhaden to bait their traps or hooks. The recreational fisherman use ground menhaden chum as a fish attractant, and whole fish as bait. The total harvest is approximately 500 million fish per year.  Atlantic menhaden are harvested using purse seines.
Omega Protein – a reduction fishery company with operations in the northwest Atlantic and the Gulf of Mexico – takes 90% of the total menhaden harvest in the United States.  In October 2005, the Atlantic States Marine Fisheries Commission (ASMFC) approved an addendum to Amendment 1 of the Interstate Fishery Management Plan for Atlantic Menhaden, which "established a five-year annual cap on reduction fishery landings in the Chesapeake Bay", imposing a limit on reduction fishery operations for 2006–2010. In November 2006, that cap was established at 109,020 metric tons;  this cap remained in place until 2013. 
In December 2012, in the face of the depletion of Atlantic menhaden, the ASMFC implemented another cap, effective in 2013 and 2014, for the Chesapeake Bay, this time at 87,216 metric tons, as well as a total allowable catch (TAC) of the species of 170,800 metric tons, a 20% reduction from the 2009–2011 average.   The TAC was subsequently raised for 2015 and 2016 to 187,880 metric tons.  The cap in the Chesapeake Bay was further lowered in November 2017 to 51,000 metric tons, but this came alongside a higher TAC of 216,000 metric tons.   Omega Protein has been openly critical of these caps.  
After menhaden had been identified as a valuable alternative to whale oil in the 1870s, the menhaden fishery on the Chesapeake was worked by predominantly African American crews on open boats hauling purse seines. The men employed sea chanties to help synchronize the hauling of the nets. These chanties pulled from West African, blues, and gospel sources and created a uniquely African American culture of chanty singing. By the late 1950s, hydraulic winches replaced the large crews of manual haulers, and the menhaden chanty tradition declined. 
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- Based on data sourced from the relevant FAO Species Fact Sheets
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- Addendum IV to Amendment 1 to the Atlantic Menhaden Fishery Management Plan (PDF) (Report). Atlantic States Marine Fisheries Commission. November 2009. p. 3. Archived (PDF) from the original on 18 March 2019.
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- Virginia Institute of Marine Science (2009). Several menhaden research projects, currently unpublished.
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- Menhaden Species Team (March 2011). Ecosystem-Based Fisheries Management in Chesapeake Bay: Atlantic Menhaden (PDF) (Report). College Park, Maryland: Maryland Sea Grant College. Archived (PDF) from the original on 24 December 2015. Retrieved 23 March 2019.
|Wikisource has the text of the 1905 New International Encyclopedia article Menhaden.|