Clean and wash the peppers. Cut 1/2 each red and yellow pepper into fine strips. Blanch in little boiling salted water for about 2 minutes, drain. Cut the remaining peppers into pieces. Separately according to colour, put them in boiling salted water for 10 minutes each. Then drain and puree.
Season to taste with salt, pepper and vinegar. Wash the chives and cut into small rolls. Divide fillets into bite-sized pieces. Arrange the pepper puree and trout fillets on plates, sprinkled with strips of pepper and chives. Serve garnished with salad