One of my lazy cooking tricks is steaming fish while cooking rice. I just put on the double broiler attachment on the rice cooker just as I start cooking rice.
As for the fillet, I place them inside a plastic container as I don't want the fish juices mixing in with the rice that's cooking underneath. I find the juice a little bitter tasting.
I just put on slices of garlic, onions, and ginger on top of the fillet. Season with salt and pepper. When the fish is cooked, I take it out the plastic container and put in on a plate (draining off the juice). Sprinkle with spring onions.
Then, I heat up a few tablespoons of peanut oil until the pan starts to smoke. Pour the hot oil over the fish. You'll hear a nice, crackling sound. Finish it off by pouring in a few tablespoons of soy sauce.
Quick and simple, yet flavorful. Maybe I should do more research on steamed dishes that can be cooked along with the rice.