Saw this on the NY Times web site - The Minimalist. It is excellent on pork and chicken as well as fish. Fast become a favorite in the house.

Section 1/2 grapefruit, orange, lemon and lime, add salt and chopped cilantro and habanero (careful here - use gloves).

The original recipe is a bit clearer. No mention of lime, either.

1 orange
1 small grapefruit
1 large lemon
1/2 cup chopped fresh cilantro leaves
1/2 habanero or other chili, seeded and minced, or to taste
Salt to taste

Cut orange in half horizontally and section it as you would a grapefruit; do this over a bowl to capture all its juice. Remove seeds and combine flesh and juice in bowl. Repeat with grapefruit and lemon. Stir in cilantro, habanero and salt.

Regards,
Chris

The video link within the article describes lime and basically any other citrus you would like to include. I include lime. Thanks for clearing it up an moving Chris. I love the minimalist.