Invasion

Invasion Description

1st Record: Stockton/CA/Mormon Slough, San Joaquin River (1953, Arnold 1968, Light et al. 2005)

Geographic Extent

Stockton/CA/Mormon Slough, San Joaquin River (1953, Arnold 1968, Light et al. 2005); Solano County/CA/Suisun Slough, Suisun (Marina Circle) (2004, USGS Nonindigenous Aquatic Species Program 2007); (nontidal) Redding/CA/Upper Sacramento River (Mills et al., in Carlton 2007)