6 line wrasse tankmate

[byushooter]

I have a well established 75g reef with a 6 line wrasse as the only fish inhabitant. What other fish would be compatible with it? I know they can be aggressive and since this one has been alone for a very long time I am skeptical about what can go in with him. I'd prefer blennies or something in the 4 inch or smaller range if possible.

Thanks.