Even professionals sometimes have a hard time distinguishing Atlantic Salmon from other salmon and trout species. As the regulations for fishing differ among species, it is important to know how to identify the salmon and trout present in Lake Ontario and its tributaries. We have two resources available. Here you can download a key for identifying adult rainbow trout, chinook salmon, coho salmon, brown trout, and Atlantic salmon. And here you can download a colour comparison of the same species, plus pink salmon, which includes both juveniles and adults (property of New York Sea Grant).