Rainbow trout often have a very mild taste. Some people described it as slightly nut-like. The flesh should be pale and flaky. If not white, then very light orange or pink. If there is a fishy taste or odor, it’s likely the fish has gone off.
Rainbow trout are similar to salmon in appearance and flavor. The fish are very similar and could even be caught in the same waters. Farmed trout may be considered too bland for some people. The trout tend to taste too plain.