Mix together the lime and lemon juice in a bowl and add the tilapia. Make sure the all the tilapia is covered by the citrus juices. This is how it will cure. If it isn't covered, it won't cure properly.
Cover the bowl and add it to the refrigerator for two hours. You can shake it around every so often if you like just make sure all the fish is covered again.
Add the vegetables and other ingredients to a separate bowl. Then add the tilapia. Pour about 1/2 - 3/4 of the lime and lemon juice mixer over everything.
Salt and pepper to taste. Served chilled.