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Atlantic Menhaden (Brevoortia tyrannus), a commercially important Atlantic Ocean fish, also known as Fatback, Bunker, Pogie, Mossback; weight – up to .5 kg (1 lb) at maturity; length – up to approx. 38 cm (15 in); lifespan – up to 10 to 12 years. Although too small and oily to eat, menhaden are harvested in large numbers to produce fishmeal and fish oil. Image courtesy of NOAA.