Deb! I'm so glad you're reading the book and I hope SBD helps a lot with your health and weight.
Diva, fish is problematic. Even though instinct would say that it makes much more sense to get the nutrients we need directly from food, the fish that have the healthy oils (i.e. salmon) tend to be those that are high in mercury. Even if you aren't pregnant or have a chance of getting pregnant, it's not recommended that you eat much of these kinds of fish because of the high mercury content. Farm-raised fish don't have mercury, but they are often high in antibiotics because they are raised in tiny spaces and tend to fight, causing injuries that have to be treated with antibiotics. So it's very difficult to find fish that's safe to eat. Fish oil capsules, on the other hand, are carefully treated to remove the mercury and don't have antibiotics. So they're a much safer option, especially if you think you'll be trying to get pregnant any time in the future, like me.
Deb, I find it difficult to get an Omega-3 Fish oil supplement that's high in EPA and DHA (it's recommended that a person without heart problems take around 500 of each) without taking a gazillion capsules. I ended up getting a one-capsule Sam's Club brand that has around 300 of EPA and of DHA (each). That's the best I could do. There are probably others out there that are better, though. If you find something, let me know. I'd love to be getting the 500 of each. It's not only good for heart health, but for depression and a host of other things, too.