Invasion

Invasion Description

1st Record: CA/Malibu Creek between mouth and dam, 3 miles north now flowing out to sea on surface, even at low tide, 1st Record: Huntington Beach/CA/Bolsa Chica channel (1895, Smith 1895; USGS USGS Nonindigenous Aquatic Species Program 2014), 1st Record: 1.0-1.5 miles west of Dana Point, 1mile southwest of Capistrano beach/CA/San Juan Creek at mouth (1973,, 1st Record:(1973, USGS Nonindigenous Aquatic Species Program 2014), 1st Record: San Diego 6, on north edge of Carlsbad, collected at Jefferson Blvd. at inlet to lagoon, about halfway between here and 605 freeway, and at Hill Street crossing/CA/south shore of Buena Vista Lagoon (1975, USGS Nonindigenous Aquatic Species Program 2014), 1st Record: San Diego County/CA/San Mateo Creek Lagoon (1974-2008, Swift et al. 2018, ~1.5 % of individual fish, common during periods of heavy freshwater flow, absent during seawater inflow)

Geographic Extent

CA/Malibu Creek between mouth and dam 3 miles north now flowing out to sea on surface, even at low tide (1971, USGS Nonindigenous Aquatic Species Program 2014), Huntington Beach/CA/Bolsa Chica channel (1895, Smith 1895; USGS Nonindigenous Aquatic Species Program 2014), 1.0-1.5 miles west of Dana Point, 1mile southwest of Capistrano beach/CA/San Juan Creek at mouth (1973, USGS Nonindigenous Aquatic Species Program 2014), near Interstate 405, San Diego/CA/San Diego R. just above and below upper limit of tidewater (1973, USGS Nonindigenous Aquatic Species Program 2014), San Diego 6, on north edge of Carlsbad, collected at Jefferson Blvd. at inlet to lagoon, about halfway between here and 605 freeway, and at Hill Street crossing/CA/south shore of Buena Vista Lagoon (1975, USGS Nonindigenous Aquatic Species Program 2014), San Diego County/CA/San Mateo Creek Lagoon (1974-2008, Swift et al. 2018, ~1.5 % of individual fish, common during periods of heavy freshwater flow, absent during seawater inflow)