I have a tropical community with
6guppies
6platties
6dwarf gouramis
4 rosy barbs
3african dwarf frog
4 bronze corydoras catfish
6zebra danios
6 neon tetras
6 cardinal tetras
6 green barbs
1 albino tiger barb
1 tiger barb

I have a coldwater community with:
2 ricefish
2 weather loach
2 bitterling
2 white clouds
2 rosy reds

A goldfish tank with

1 sarasa
1 comet
1 shubunkin
1 goldfish
1 fantail

Amazon theme tank with

4 congo tetras
4 emperor tetras
1 angelfish
1 altum angelfish
1 discus
1 albino angelfish
4 rummy nose tetras
4 one line pencilfish
4 bronze corydoras
4 leopard corydoras
1 panda corydoras
1 peppered corydoras
4 bristlenose catfish
4 lemon tetras
4 rams

African theme with

6 assorted mbuna
6 assorted haps
6 assorted tanganyikans
2 kribs
2 jewel cichlids
2 butterscofferi
1 utaka
1 peacock

How big are those various tanks? It seems like a lot of fish.

6 dwarf gouramis probably won't get along for long. Males of that species don't like each other when mature.