ok well i went to the fish store and i picked out my fish, before i buy them i wanted to check with you guys to make sure they are compatible in a 20 gallon(us) tank so here they are 3 fancy tailed guppys. 6 phantom tetras, 1 bumblebee gobby, 1 coolie loach, 3 wrestling halfbeaks. now i already have bought the guppys. appreciate any suggestions 
I was just trying to think of a smaller group/alternative to the rainbows, since there really isn't any room for a proper group of rainbows in a 20 gallon with the other fish.
thanks for any help. FYI-i want the neon rainbows alot. lol