Suggestions on a new fish ?

[J062682l]

I'm thinking of throwing a new fish in my mixed reef , any suggestions it's a peaceful tank so I need a peaceful and vibrant fish.
It's a 55
Livestock::
Six line,,, pair of percula, a green clown goby, 4 green chromis,, and an algea Blenny
And I want one last fish to top it off. Something real nice. No tangs though ya is not big enough

 

[Marshall O]

Well honestly, your tank is not as peaceful as you think. Sixlines are notorious for being some of the meanest fish out there given there size. Clowns are damsels and are again known to aggressively defend territories once mature. And Algae Blennies get beligerent once mature. So either you will need to add something that can hold its own, or leave things the way they are. You are already pretty well stocked for a 55 as it is and so my recommendation is to leave the tank where it is at.

Not what you were looking for I realize, but just giving my honest opinion.