I actually had large discus for dinner while colecting in the Purus river in the Brazilian Amazon. We ate the ones that succumbed after being collected. Kind if like thin, bony bluegills, but very tasty with a cold Brahma beer.
We also ate Uaru, pike cichlids, peacock bass, and many others. We almost cried while devouring what must have been literally thousand's of dollars worth of expensive and rare fish.
I recommend this to anyone.
Mike Z.