hey, i have a 29g and i was wondering if a gourami would fight, or cause mayhem? right now these fish are in it:

1 mystery snail
3 platys
3mollies
5 danios
8 guppys

would i be able to add a flame gourami? would there be any fighting??

how many would you recomend??

(i do 25% weekly WC and have a penguin 350b power filter)