The Chilhuil sea catfish (Bagre panamensis), also called the Chihuil, is a species of sea catfish in the family Ariidae. It was described by Theodore Gill in 1863, originally under the genus Aelurichthys. It inhabits subtropical marine and brackish waters in the eastern Pacific region, including California, USA; Colombia, Guatemala, Peru, El Salvador, Costa Rica, Ecuador, Honduras, Nicaragua, Panama and Mexico. It dwells at a depth range of 3 to 177 m (9.8 to 580.7 ft), most often between 10 to 60 m (33 to 197 ft). It reaches a maximum total length of 51 cm (20 in).