Invasion History

First Non-native North American Tidal Record:
First Non-native West Coast Tidal Record:
First Non-native East/Gulf Coast Tidal Record:

General Invasion History:


North American Invasion History:




Taxonomic Tree

Kingdom:   Animalia
Phylum:   Mollusca
Class:   Bivalvia
Subclass:   Pteriomorphia
Order:   Ostreoida
Family:   Anomiidae
Genus:   Anomia
Species:   peruviana


Anomia adamas (Gray, 1850)
Anomia alectus (Gray, 1850)
Anomia fidenas (Gray, 1850)
Anomia hamillus (Gray, 1850)
Anomia lampe (Gray, 1850)
Anomia laqueata (Reeve, 1859)
Anomia larbas (Gray, 1850)
Anomia limatula (Dall, 1878)
Anomia pacilus (Gray, 1850)
Anomia subcostata (Conrad, 1855)
Anomia tenuis (C. B. Adams, 1852)
Anomia tenuis (C. B. Adams, 1852)
Calyptraea aberrans (C. B. Adams, 1852)
Placunomia claviculata (Carpenter, 1857)

Potentially Misidentified Species

Anomia simplex
An Atlantic species, formerly considered conspecific with A. peruviana, e.g. Anomia simplex Mabille, 1895



Attached to rocks, other shells, waterlogged wood (Abbott 1974). The related A. simplex has planktotrophic larvae (Chaley and Andrews 1971)



Trophic Status:

Suspension Feeder



General HabitatRockyNone
General HabitatOyster ReefNone
General HabitatMarinas & DocksNone
Salinity RangePolyhaline18-30 PSU
Salinity RangeEuhaline30-40 PSU
Tidal RangeSubtidalNone
Vertical HabitatEpibenthicNone

Tolerances and Life History Parameters

Maximum Length (mm)50.1Abbott 1974
Broad Temperature RangeNoneWarm Temperate-Tropical
Broad Salinity RangeNonePolyhaline-Euhaline

General Impacts

Regional Distribution Map

Bioregion Region Name Year Invasion Status Population Status
NEP-VII None 0 Native Estab
CAR-III None 2009 Def Estab
SEP-H None 0 Native Estab
NEP-VI Pt. Conception to Southern Baja California 0 Native Estab
NEP-V Northern California to Mid Channel Islands 0 Native Unk
SEP-I None 0 Native Estab
NEP-IX None 0 Native Estab
NEP-VIII None 0 Native Estab
PAN_PAC Panama Pacific Coast 0 Native Estab
PAN_CAR Panama Caribbean Coast 2009 Def Estab

Occurrence Map

OCC_ID Author Year Date Locality Status Latitude Longitude


Abbott, R. Tucker (1974) American Seashells, Van Nostrand Reinhold, New York. Pp. <missing location>

Academy of Natural Sciences of Philadelphia 2002-2024a Malacology Collection Search. <missing URL>

Appeltans, W. et al. 2011-2015 World Registry of Marine Species. <missing URL>

California Academy of Sciences 2005-2015 Invertebrate Zoology Collection Database. <missing URL>

Carlton, James T. (Ed.) (2007) The Light and Smith Manual: Intertidal Invertebrates from Central California to Oregon Fourth Edition, Completely Revised and Expanded, University of California Press, Berkeley. Pp. <missing location>

Chanley, Paul; Andrews, J. D. (1971) Aids for identification of bivalve larvae of Virginia, Malacologia 11(1): 45-119

Coan, Eugene V.; Valentich-Scott, Paul (2007) The Light and Smith Manual: Intertidal Invertebrates from Central California to Oregon, University of California Press, Berkeley CA. Pp. 807-859

Dall, William Healey (1910) Report on a collection of shells from Peru with a summary of the littoral marine Mollusca from the Peruvian Zoological Province, Proceedings of the U. S. Nationa Museum 37(1704): 147-294

Harvard Museum of Comparative Zoology 2008-2021 Museum of Comparative Zoology Collections database- Malacology Collection. <missing URL>

Schlöder, Carmen and 5 authors (2013) The Pacific bivalve Anomia peruviana in the Atlantic: a recent invasion across the Panama Canal ?, Aquatic Invasions 8(4): 443-448

U.S. National Museum of Natural History 2002-2021 Invertebrate Zoology Collections Database.