My 55 FOWLR stock list:
2 mocha clowns
1 Bartlett anthias
1 6-line wrasse
1 lawn mower blenny
1 clown goby
1 tiger goby
1 spotted mandarin
Typical CUC, emerald crab, long spine urchin, coral banded shrimp
This doesn't produce a huge bioload either because they're all pretty small fish, but it's a great system...