Rinse the Bacalao(fillets) to remove the excessive salt and tear into pieces. Place in saucepan and boil until tender and breaks apart with a fork. Drain and break the fillets into small pieces with a fork and set aside. In pan heat oil and saute onions and green peppers. Add tomatoes, fillets, sazon and tomato sauce. Add 1/2 cup of water and simmer covered over low heat until bubbly.