Question

Which of the following fish led to the extinction of an ecologically unique assemblage of more than 200 species of cichlid fish in the take Victoria of E. Africa?

• A. Catla catla
• B. Dog fish
• C. Nile perch
• D. African catfish

Answer 1

Answer: (C)

Nile perch

Nile perch, (species Lates niloticus), large food and game fish of the family Centropomidae (order Perciformes), found in the Nile and other rivers and lakes of Africa. A large-mouthed fish, the Nile perch is greenish or brownish above and silvery below and grows to about 1.8 m (6 feet) and 140 kg (300 pounds). It has an elongated body, a protruding lower jaw, a rounded tail, and two dorsal fins. In 1954, L. niloticus was introduced into Lake Victoria in Africa, home to hundreds of cichlid fishes. A powerful predator, the Nile perch has greatly reduced the cichlid numbers.

So the correct option is 'nile perch'.