My guess would be its the Rhinofish as already mentioned, look in Bill Hansford Steel's Previous Book, African FF Handbook and there is a whole chapter on these monsters.. *Drool...
heres a beautiful example of one:
"If you dont have almost unlimited patience, forget about becoming an accomplished saltwater fly angler" Jack Samson
Message from Dr Ernst Schwartz from SAIAB
It is indeed a specimen that was caught by my colleague Olaf Weyl (in the picture and copied on this email) below Capanda Dam. We are doing research on the system to identify species for future fisheries development with Angolan collaborators. The fish is as yet unidentified but certainly belongs to the genus Labeobarbus (yellowfishes). You can read more about this and other fish in the Fishing and Hunting Journal (last month's issue I think).
Regards
Ernst
Bookmarks