Central and South America: Pacific draining rivers and estuaries from Mexico to Peru. Maximum Size 45cm Temperature 23-28°C Water Parameters Hard & alkaline. Often erroneously marketed as a freshwater fish. Juveniles may be kept in brackish waters; adults do best in full marine conditions. High O2 level essential. Compatibility Non-community Lighting Dim-Medium Sexual Dimorphism Mature females fuller bodied. Feeding Catfish pellets, granules, flake and frozen foods