Place fish in a glass of china dish. In another bowl, combine 2 cups of water, the lime juice, 1 1/2 t salt, and 1 T scallions. Pour the marinade over the fish, and marinate in the refrigerator for 1 hour. Drain the fish and discard the marinade. Place the remaining scallions, garlic, chili peppers, and parsley into a heavy pot (preferable cast iron). With a wooden spoon, mash the mixture to extract the juices. Add the remaining 3 cups of water, allspice berries, and thyme. Cover the pot and place on high heat. Bring to a boil. Reduce heat and simmer for about 5 minutes. Add remaining 1/2 t salt and the fish to the broth. Cover and bring to boil again. Reduce heat and simmer for about 10 minutes or until the fish flakes easily with a fork. With a slotted spoon, transfer the fish onto heated dinner plates. Boil the liquid on high heat for 2 to 3 minutes and spoon over the fish. Garnish with lime quarters.
