what to add..

I am planning on adding one more fish to my 20L, i was considering cardinals and basslets. but have since narrowed it down to either a Royal Gramma, or a Chalk Bass. My only concern about the Gramma is the fact it is similar in appearance to my Smith's Blenny, although the Blenny is already established..My LFS has each of these in now, and in general, the Chalk Bass aren't doing as well due to the fact they are in a tank alone, with a 4 inch Clarkii Clown....any input/help is greatly appreciated!Thanks8)

 

well i decided on the Royal Gramma, and i am very happy about it!They seem to get along fine, flare up at eachother but nothing malicious. will post some pics once he settles in!