Stocking help

[Deontae]

Hey guys I just upgraded to a 40 breeder and I’m thinking of getting more fish.
Current stocking:
Oc. Clown pair
Six line wrasse
I was wondering what other fish or inverts I could put in the tank. I also have coral so they would have to be reef safe. I also do not have a sump so I’m not sure how many more fish I can add
Thanks for any help

 

[CookieRdReef]

Favorite invert is definitely a cleaner shrimp.

 

[PicassoClown04]

Love the fire shrimp and cherub angel. Maybe a wrasse or goby?