To make the fish mixture, place the fillets and onion in a food processor.

Form a little of the fish mixture into a ball and cook it in the broth for 5 minutes.

With moistened hands, divide the fish mixture into 12 portions, about 4 ounces each.

Drain fish mixture, then toss it with black pepper and more salt to taste, if needed.

Drain the fluid from the fish mixture and fold in the remaining orange juice.

Keeping your hands wet with cold water, form the fish mixture into oval patties about 3 inches long.

Form the fish mixture into ovals using two tablespoons dipped in cold water.

Form the fish mixture into patties about 3 inches in diameter and 1 inch thick.

Add fish mixture, and sauté until fish is opaque, about 3 minutes.

Meanwhile, shape the fish mixture into balls about 1 1/2 inches in diameter.