In reply to Mrs Only a Hill:
Salmon spends its adult life in the sea. Trout, unless specifically a sea trout, spends its adult life in fresh water (both farmed and wild). Loch trout isn’t really a specific species. But brown trout and rainbow trout are. Either way, they have a milder taste, but are similar to salmon in taste. I prefer wild trout to salmon. When I used to catch them I would cook them whole - easier to get the bones out than filleting first. My grandma cooked trout and char regularly: frying pan type pan, boiling water, trout in pan and as soon as it started to boil turn the heat off, lid on and leave for twenty mins. Salt, peppercorns, bay leaf, whatever added to the water.