additions?

[s_birdz]

I have a 66g tank that is 12 months old.
I have the following in the tank
1 copper banded butterfly
1 blue tang
1 kauden cardinal
2 pajama cardinals
1 firefish-dartfish
1 starry blennie
2 clowns
1 pistol shrimp

what I'm looking to do is add. please help make choices on which ones...or if I shouldn't add
anemone-for clowns which type is best?
soft corral--maybe mushroom coral
watchman gobbie-for the shrimp
feather dusters---will the cbb or any others go after these?
lettuce sea slug

 

[saltyphish]

nem imo.

 

[3dees]

feather dusters wont last long with a cbb. everything else could work if you remove the tang. tank is much too small and your probably looking at problems eventually.