The dorsal isn't as evidently pointed in male moonlights as in three-spots but it
is longer. I actualy remember, quite a while ago, that I did sex your moonlight gouramies - that was the very first time you posted pics to get your three-spots sexed - but I didn't last time when you posted specificaly about the moonlights (well, actualy, I can't remember whether I did or not

but I'll go with what you said).
This, for example, is a female judging by the dorsal:
http
/www.molluscan.com/fish/exploration3...ightgourami.jpg
So is this by the looks of it (also note hte ventral fins are light yellow - not orange or red):
http
/www.piranha-fury.com/pfury/uploads/...-1095907552.jpg
And this one is also female, if you look at the body shape (the dorsal's not realy visible anyway):
http
/www.angelfire.com/ma3/shawnamoonlight2/
On the other hand, here's an obvious male (look at that dorsal - though he doesn't seem to have red ventrals - simply not in breeding condition or due to bad lighting):
http
/fins.actwin.com/fresh-pics/moonlight_gourami.jpg
Here's an immature moonlight (looks male if you look at body shape though dorsal isn't obviously pointed and he doesn't have any red/orange ventral coloration):
http
/photos.fishindex.com/tri/trichogast..._gourami318.jpg
Here's another male (dorsal is elongated though not particularly pointed and eyes and ventral fins clearly bright orange):
http
/www.aquarium-fish.info/graphics/Tri...rmicrolepis.jpg
Just to clarify, I'm not claiming to be an expert at sexing moonlights - I came across plenty of images I couldn't decide on and it can depend a lot on the particular photo. I
do know that I can sex them in person so I should be able to from the better pics but there are some that I just can't handle.
Anyway, yes, removing one male and getting 2 females would work.
However, the gouramies you have at the moment will probably attack any new gouramies you add - aprticularly if the new additions are smaller or immature fish. You can get round this by buying fully grown females and re-aranging your existing tank before you add them to confuse the existing fish. While you're at it, get some more ornaments and/or plants to increase the number of hiding places in your tank ready for the new arrivals.
edit: spotted a spelling mistake