Nile perch Nile perch 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. The Nile perch is a fish of substantial economic and food-security importance in East Africa. 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
Nile monitor Nile monitor The Nile monitor ("Varanus niloticus") is a large member of the monitor family (Varanidae) found throughout much of Africa, but is absent from the west, where it is replaced by "Varanus stellatus". Other common names include the African small-grain lizard, water leguaan or river leguaan (leguan, leguaan, and likkewaan mean monitor lizard in South African English, and can be used interchangeably). Nile monitors can grow to about in length, with the largest specimens attaining . In an average-sized specimen, the snout-to-vent length will be around . In body mass, adults have been reported to vary widely, one study