Some fishermen tell me I caught a Trout Salmon. Does this fish differ much from ordinary salmon?
I've had Salmon Trout.  They are a pink fleshed trout, that mimics the flavour of Salmon somewhat.

My favourite preparation is to do it as a Yerevan Trout.  Essentially Roast the fish filets, prepare the sauce - Lemon, Butter, Capers, Artichokes, and any pan juice you can get.  Serve beside your favourite rice.