Rainbow trout can be fished all year round. Mostly, you will find it frozen at your local market. I also usually find it at Trader Joe's and my local supermarket, which focuses on fresh produce, high-quality meats, and seafood. You can go to your local fish market too. u003cbr/u003eu003cbr/u003eFor example, they typically carry a variety of fish all year round, including rainbow trout. Or ask them for something similar. For instance, you can ask the fishmonger if they have any fresh rainbow trout or if they carry any frozen options. However, if you're up for a challenge, you can even try catching your own wild rainbow trout!u003cbr/u003e