Oplegnathus conwayi, the Cape knifejaw, is an endemic fish that only occurs between Table Bay and the Aliwal Bank on the South African coast.

References 
 Sea Fishes of Southern Africa. Rudy van der Elst & Dennis King. 2006. ISBN 978-1-77007-345-6
 http://fishbase.org/summary/Oplegnathus-conwayi.html

Oplegnathidae