Oplegnathus robinsoni

Oplegnathus robinsoni, the Natal knifejaw, is a fish that is endemic to the east coast of South Africa and Mozambique. They occur northwards from Transkei.

Appearance
The fish is grey-brown with a large second dorsal fin. The fish are yellow when they are small with four black stripes across the body. The teeth are part of the mouth to be able to tear off organisms. The fish grows up to 60 m long and 3 kg heavy.

Habitat and habits
They are found in reefs near the coast. They are also abundant in Lake St Lucia.