Termie! I don't know WHY you insist on getting soft water, nitrate intolerant fish!!!
NO! You should NOT get another one!!!
Now that I'm done being a jerk. . . *hugs*
I looked at your pics and your video - I can't tell what sex they are. You're just as good a guesser at this as I am, anyway - and we came up with the same guesses on my four! Try to get a good profile shot so that we can see their vents - from what I understand that's really the only true way to tell, anyway - since they like to breed the females to show the dominant characteristics of the male (such as coloration, top fin, tail extensions, etc) You're right - they also still might be too young to tell yet - how big are they? I LOVE LOVE LOVE BOLIVIANS!!! *HUGS* I really hope they do well in your tank, and I'm sure that they'll be happy to have others of their kind (provided they don't fight too much!) I want to point out that TWO of your THREE seem to have sunken tummies like my C.Cat did. It might just be that they're underfed from the fish store, but keep a close eye on them, because if they don't fill out in a couple of weeks, you might have to seek advice on a potential problem. I'd hate to see you go through the death of another Bolivian (cries for Burt).
Pretty, pretty Gourami! I love those fish - they're so gorgeous! I hope you managed to snag a healthy one, and that s/he lives to a ripe old age! :)
Congrats on the new arrivals!