Place the fish in a large bowl.
Cover with water and add the juice of 1 lime.
Leave to 2 - 3 minutes if the fish is fresh and unfrozen; or at least 1 hour if the fish is frozen to defrost completely.
Drain the water. Rinse the fish thoroughly.
Cut the head off (optional).
Cut slits 1-inch apart and ¼-inch deep along each side of the red snapper.
Mix together Caribbean green seasoning, salt and juice of ½ lime.
Massage the seasoning mix onto the fish, inside the slits and into the underbelly.
Cover and refrigerate for 30 minutes to marinate.
Add a small frying pan on medium heat.
Pour in enough oil for frying. Allow to heat up fully.
Add the marinated red snapper to the hot oil (be careful!).
Fry for 3 minutes.
Turn the fish over. Fry for 3 more minutes.
Check the internal temperature of the fish (it should be 145°F).
Remove the fish from the oil. Place on paper towels.
Sprinkle salt over the hot fish.
Squeeze juice of ½ lime over the fish.
Serve immediately.