I like seeing how stuffed others tanks are, but 20 fish in a 75g wow that's a lot! Makes me feel like my tanks are no were near full in comparison
but seriously that is a heck of a lot of fish, defiantly upgrade or rehome time
My 80g list
2 filefish (one wasn't doing his job so I got another one, and they seem to get along fine)
2 lion fish (fuman chu and fuzzy red dwarf)
Tiara anthia
Blue star leopard wrasse
Thornback boxfish
Kuiteri leopard wrasse
Orange diamond goby
9 in total not to bad, especially for me