| Main Ref. | Williams, E.H. Jr., L. Bunkley-Williams, C.G. Lilyestrom and E.A.R. Ortiz-Corps, 2001 |
| To | Continental USA |
| FAO area | |
| From | China |
| FAO area | Pacific, Northwest |
| Year | |
| Range | 1800 - 1899 |
| Period | 18th century |
| Established in the Wild | Unknown |
| Established in Aquaculture | |
| Significant Ecological Interactions | yes - adverse |
| Significant Socio-economic Effects | |
| Introduced by | |
| Reason | aquaculture |
| Other Reason | |
| Comments | Brought by chinese immigrants in the late 1800s due to its medicinal properties when eaten raw. Out competes and replaces native clams, clogs water pipes, screens and other submerged structures. Ref. Williams, E.H. Jr., L. Bunkley-Williams, C.G. Lilyestrom and E.A.R. Ortiz-Corps, 2001 |