Invasion

Invasion Description

1st Record: Stockton/CA/San Joaquin River (1874, Cohen and Carlton 1995; Dill and Cordone 1997)

Geographic Extent

Sacramento-San Joaquin Delta; Suisun Bay (Cohen and Carlton 1995; Dill and Cordone 1997); Walnut Grove/CA/North Fork Mokelumne River (Cavallo et al. 2013)