Barramundi (aka Asian sea bass) is a mild white fish with a flaky texture and a respectable amount of omega-3s (667 mg per 4-oz. serving compared to 147 mg for mahi-mahi and 1,127 mg for wild salmon). Farmed barramundi is rated a Best Choice by Seafood Watch. You can substitute mahi-mahi in this recipe. Serve up this easy dinner with some roasted new potatoes. They'll need to cook for 20 to 25 minutes. Start them on the bottom rack of the oven while you prep this healthy recipe and then cook the fish and asparagus on the middle rack when you're ready.