I was curious as to how long it would take for someone to mention wrasses in this small tank! Lol.
I would never suggest keeping any wrasse (short of a Tanaka's Pygmy) in this small of a tank. I am guilty though, you caught me. I have two fish in this tank. One is a firefish, the other is my prized Macropharyngodon Negrosensis. She actually takes food from my hand. She's pretty delicate, so I like to keep a close eye on her. Luckily, mine eats like a pig.
Again, I love wrasses and have done countless hours reading everything and anything I can find on them. I would never suggest this as appropriate or normal, but for this single example, she works for me.
I've actually tried to hide her in any of this build thread's photos by excluding full tank shots to avoid someone calling me out for it. I'll post one soon.