STEAMED RED SNAPER WITH RICE. Is there a simple recipe to cook fish in a rice while rice is cooking

Is there a simple recipe to cook white fish in a rice cooker while rice is cooking? Or otherwise really easy dishes to put in a rice cooker to steam?
Not a recipe, more like a technique. Steam then fish plain with a bit of salt or msg and then after cooking top with some green onions and light soy sauce.
Don't apply too much heat to your Japanese seasonings and aromatics becuase that ruins the flavor.
Simple steamed rice recipe try some dice yams or reconstituted shitake mushrooms on top of rice.