Number of fish in a 55 gl

[Coralgurl]

How many fish are acceptable in a 55 gl?
I have currently:
2 bangaii cardinals
1 blue green chromis
1 purple dotty back
1 yellow tang
1 flame angel
1 coral beauty
1 starry blenny
2 black clowns on order

The yellow tang I already know is an issue and if I can't find a home for him, Ive made other arrangements. The dotty back is picking at one of the cardinals, vie just learned they are a mean fish, so will have to find a home for it as well. The angels went in at the same time and do not appear to be an issue. Ive got a reef tank with 6 corals at the moment. I was told not to add a bunch of fish at one time but did not know there was a limit to the amount of fish.

Thoughts? Thanks