The Lofty Triplefin is known from southeastern Florida, Bahamas, and Caribbean. It lacks the black edge on the second dorsal fin. Roughheads are known from southeastern Florida, Bahamas, and Caribbean. They have 3-4 brownish, diagonal body bars. Redeye Triplefins look very similar to Roughhead, but the bar right before the tail fin on the Redye is darker and broader than the bars preceding it.
Redeyes also have a red iris.
I have never seen a picture of this triplefin species either. Most of the Lofty Triplefins I have seen have been on healthy brain coral heads. One thing to beware of is the similar looking female Blackhead Blenny. Both the Lofty Triplefin and Blackhead Blenny can have transparent bodies and are found in the same habitat. Sometimes you will not be able to see the 3 fins on a triplefin because they are not erect.