Nile perch (Lates niloticus).

Drawing by Robbie N. Cada from FishBase. http://www.fishbase.org/Collaborators/CollaboratorSummary.cfm?ID=7

Source: https://commons.wikimedia.org/wiki/File:Lates_niloticus.png

The Nile perch (Lates niloticus) is a species of freshwater fish in family Latidae of order Perciformes. It is widespread throughout much of the Afrotropic ecozone, being native to the Congo, Nile, Senegal, Niger, and Lake Chad, Volta, Lake Turkana, and other river basins. It also occurs in the brackish waters of Lake Maryut in Egypt. Originally described as Labrus niloticus, among the marine wrasses, the species has also been referred to as Centropomus niloticus. Common names include African snook, Victoria perch (a misleading trade name, as the species is not native to Lake Victoria).
Order: Perciformes
Suborder: Percoidei
Family: Latidae
Genus: Lates
Species: Lates niloticus (Linnaeus, 1758)
Synonyms:
Labrus niloticus Linnaeus, 1758
Centropomus niloticus (Linnaeus, 1758)
Lates niloticus macrolepidota Pellegrin, 1922
Lates albertianus Worthington, 1929
Lates niloticus albertianus Worthington, 1929
Lates nilotus rudolfianus Worthington, 1929