Tilapia
Tilapia, an exotic fish from Africa. was originally introduced in the 1960's. At least four distinct species of tilapia have been introduced into Arizona. Extensive hybridization often makes identification difficult. Similar in body shape to bluegill. Two-part lateral line with front portion higher on body than rear portion. Long, unbroken dorsal fin and anal fin with pointed ends.
Average Length: 4 to 18 inches.
Average Weight: 6 ounces to over 5 pounds.
Habitat
Tilapi are mostly found in the Salt and Gila rivers and in the network of canals and ditches in farming areas between Phoenix and Yuma. Often stocked in canals and artificial lakes for algae and vegetation control. Isolated populations exist at Alamo Lake, Lake Pleasant, and Roper Lake. They cannot survive in temperatures below 50 degrees Fahrenheit.
Diet
Tilapia primarily feed on vegetation and algae, although they will take insects and worms.