Yes, chromedome52 is right. It is the species of Protomelas. It is a Taiwan Reef Cichlid, the late bloomers.It's a juvenile fish, and could be one of a dozen species with that marking pattern. Probably some species of Protomelas, but I'm not even certain about the genus.
Easy peasy. Its called "I need a big saltwater tank now!!!:Maybe we can start this up again, we’ve got a lot of new members and it’s a fun game! (Just remember to read the first post so you know how to play!).
This one should be pretty easy. Common or scientific names accepted.