Invasion

Invasion Description

1st Record: Fish screen facility, Tracy/CA/Sacramento-San Joaquin Delta (1973, on Ameiurus catus, White Catfish, introduced, and 4 native fishes (Mylopharodon conocephalus (Hardhead); Orthodon microlepidotus (Scarmento Blackfish); Pogonichthys macrolepidotus (Splittail); Ptychocheilus grandis Sacramento Squawfish) (Hensley and Nahhas 1975).

Geographic Extent

Fish screen facility, Tracy/CA/Sacramento-San Joaquin Delta (1973, on Ameiurus catus, White Catfish, introduced, and 4 native fishes (Mylopharodon conocephalus (Hardhead); Orthodon microlepidotus (Scarmento Blackfish); Pogonichthys macrolepidotus (Splittail); Ptychocheilus grandis Sacramento Squawfish) (Hensley and Nahhas 1975).