Turn your oven to 250C (480F). Line a large baking sheet / tray with baking paper. Spread the frozen cauli rice (no need to defrost first) in a single layer leaving room for the fish.
Place the fish skin side up next to the veggie rice. Making sure the fish is touching the oven tray not sitting on the cauli so it cooks quickly. Drizzle the fish with the teriyaki sauce.
Pop in the oven and set your timer for 10 minutes.
When the timer goes, check that the fish is cooked through. It might need a few more minutes depending on how thick it is.
When the fish is cooked (cut into it if you're not sure). Place the hot veggie rice on a plate. Top with the fish. Spoon over any juices.
If you're using the PLUS ingredients sprinkle them over the top.