In a medium pot over medium high heat, add 1 quart of water and 2 tablespoon of salt and bring to a simmer. Poach the shrimp until just pink. Strain and chill.
Dice the fish into 1/4 inch squares and place in a bowl. Add the juices and let marinate or cook for 45-60 min. Drain the fish slightly. Add the remaining ingredients and let marinate for 45 minutes.
Season and serve.
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