if you can keep up with the bioload there isn't a limit on the amount of fishes. I am long as you have your water param controlled you'll be fine.
33 gallon long
1x Ocellaris Clownfish (Amphiprion ocellaris)
1x Blue Chromis (Chromis viridis)
1x Firefish (Nemateleotris magnifica)
1x Banded Goby (Amblygobius phalaena)
1x Green Wrasse (Halichoeres chloropterus) <~~ semi reefsafe fish
Regretted putting banggai cardinalfish in my tank. They just don't eat, and die slow deaths. It's a shame because they're one of my favorites. So many people say they're hardy fish too. I'm 0/4 and will never buy one again. I'll just admire them at the pet store.
In my 90g with a 15g sump I have:
2 platinum clownfish
1 Mimic lemon peel tang
1 Copperband butterfly
1 Coral Beauty Angel
1 Mandarin spotted goby
I'm thinking of adding one more but I'm not sure.
master list
vlamingi tang
sailfin tang
purple tang
maculiceps tang
ringtail tang
yellow tang
hippo tang
achilles tang
mimic tang
scopas tang
lavendar tang
niger trigger
harlequin tusk
blue line snapper
foxface
red sea regal angel
coral beauty
pair of bird wrasses
checkerboard wrasse
eightline wrasse
red breasted wrasse
quinquevittatum wrasse
trilobatum wrasse
12 lawnmower blenny
3 squirrels
12 assorted damsels
clown grouper
flame hawk
looks, plus the bioload would be lower, and possibly less aggression in the future. whatever you prefer is above my opinion anyways.For looks or for health?