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Mytilopsis leucophaeata
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Mytilopsis leucophaeata
Taxonomic Group: Mollusks-Bivalves


Mytilopsis leucophaeata is commonly known as the Dark False Mussel and Conrad's False Mussel. It was first described in 1831 and is native to the east coast of North America from the Chesapeake Bay to Veracruz, Mexico. It has been introduced to the northeastern United States and to ports and estuaries throughout Europe. This species can tolerate salinities of 30 PSU and above, but it is usually found in brackish environments, often in oligohaline water (0.5-5 PSU). It can be found growing on hard surfaces such as logs, stones, shells, and artificial structures. No ecological impacts have been reported for this species, but it has caused significant economic problems by fouling industrial water systems in Belgium, the Netherlands, and Spain.

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Fofonoff PW, Ruiz GM, Steves B, Simkanin C, & Carlton JT (2018)
National Exotic Marine and Estuarine Species Information System.
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Marine Invasions Lab
Smithsonian Environmental Research Center

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