Put rice in boiling salted water and let it swell for about 18 minutes. Cut spring onions into small pieces. Quarter tomatoes and remove seeds as desired. Cut the flesh into small cubes. Cut mushrooms into slices.
Wash fish, dab dry and cut into 3 pieces. Season with salt and pepper. Heat oil in a small coated pan and fry the fish pieces in it for about 3 minutes, turning them over. Take them out. Fry the mushrooms and spring onions in the frying fat and add 125 ml water. Season with broth. Bring to the boil and thicken with a little binding agent. Season to taste with salt and pepper. Add the diced tomatoes and fish to the vegetables and heat them up.
Season with broth. Bring to the boil and thicken with a little binding agent. Season to taste with salt and pepper. Add the diced tomatoes and fish to the vegetables and heat them up. Arrange on a preheated plate. Add drained rice extra