In a large bowl, add the pieces of fish (2x2cms), slices of octopus (1 ½ cms), squids rings, the king prawns and shells. In a separate bowl, cut onion in slices and wash them. Mix all ingredients together and wash them again. Add salt, MSG, red and yellow aji limo
(cut). Squeeze lemons, add the cubes of ice and mix everything. Serve it without the cubes of ice, in a dish garnishing with lettuce, sweet potatoes and corn.