Biological fish silage was produced from the mixture of three low price fish species. After mixing it with molasse, papaya and pineapple wastes, and Lactobacillus plantarum incoculation, the product was stored for seven days, dehydrated and added to several diets of formulated poultry feed as a substitute of fish meal. Physical-chemical and microbiological analyses were done to the raw materials and final products. Biological tests of acceptability indicated that chicken preferred diets up to 50% of fish silage. Chicken's weigh increased and food consumption tests, in addition to the sensory evaluation tests in the chickens white meat, showed the advantages of inclusion of 5-20% fish silage in the diets of experimental animals.