Are you asking for another coral that uses the same apparatus as Leptoseris fragilis or a coral that uses a different type of apparatus than L. fragilis?
Any coral that uses any type of unique behavior, apparatus, chatrateristics, etc that are involved in photosynthesis. There are a couple in particular that I have in mind, but I will accept and award partial credit for anything that is well justified...I told Tehlia that even using a group, growth form or whatever may be acceptable...but I'm really looking for a couple corals that have a unique feature at their disposal.