A mix of up to 3 Dendrochirus sp. lions (M-F-F trio of D. brachypterus, or single specimens of brachypterus, zebra, barberi, or biocellatus).
Small species scorps (typically, Scorpaenodes sp.)
Waspfish (cockatoo, redfin, long spine)
Leaf fish (Taenianotus triacanthus)
Stingfish (Chorydactylus, Inimicus)
Bristletail filefish (Acreicthys tomentosus)
I do think that unless you really like the damsels, now is the time to get them out...they're nasty little suckers.