Rinse the fish in a colander and let it dry for 5 minutes. Put it in a large bowl along with the rest of the lime juice. Put in the rest of the ingredients. Add salt, pepper and oregano to taste. Serve with salted crackers.
Notes Use fresh lime juice.
You can use any kind of fish that you like with the condition that it does not fall apart after marinating. For instance, it does not work with white fish.