“The Nile perch (Lates niloticus) is an important food fish in Africa and a prized catch for sport fishermen, but the species is also a massive environmental nightmare. In fact, the Nile perch is massive in more ways than one. It's a giant among fishes, reaching a length of up to 6 feet and a weight of more than 500 pounds. Anything that big eats a lot, and when misguided humans have introduced the Nile perch into new aquatic ecosystems (most notably, Lake Victoria in East Africa), it has caused catastrophic declines among native fish populations. The Nile perch is now common in the Nile, Chad, Senegal, Volta and Congo river basins, and has been ranked by conservationists as one of the world's 100 worst invasive species” http://www.animalplanet.com/tv-shows/river-monsters/fish-guide/nile-perch/
Nile Perch is not an important food fish in Africa, it is important to the foreign investors who set up the system and sell the fish, the locals do not and in most cases are not allowed to eat it because of its value.
If you have never seen it before I recommend watching “Darwin’s Nightemare”
Sometimes we have really bad ideas.
Dr Flavius A B Akerele III