Though mine is a little larger, around 170 G, this gives an impression of what's possible:
2 x Zebrasoma flavescens - yellow tang
2 x Z. gemmatum - gem tang
1 x Centropyge loricula - flame angel
1 x Paracentropyge multifasciata - multibarred angelfish
2 x Pygoplites diacanthus - regal angel
1 x Biochoerus cosmetus - wrasse
1 x Cirrhilabrus rosefascia - wrasse
1 x Pseudocheilinus ocellatus - mystery wrasse
2 x Amphiprion ocellaris - clownfish
2 x Holanthias borbonius - blotched anthias
1 x Gramma loreto - Royal Gramma
2 x Liopropoma carmabi - candy basslet
2 x Acreichthys tomentosus - seagrass filefish
1 x Salarias fasciatus - Henk (THE Dutch name for them)
1 x Nemateleotris magnifica - firefish
3 x Fowleria sp. - small red fishes
11 x Apogon leptacanthus - blue eye cardinal
1 x Opistognathus aurifrons - Jack in the Box
Part of the trick isn't only to pay attention to the water quality (export by corals and skimmer, for example) but also to the fishes' behaviour: try to avoid combining fishes which occupy the same niches. In my experience, this helps a lot!
It sounds crowded, but because of the above, it's not, see the picture
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