"giSome people have some success in a heavily planted aquarium. That being said, in a community situation, the eggs will most likely be eaten by the other fish in the tank, probably before the parents can even get to them. I prefer to breed in a separate tank to ensure that I get fry. Breeding nets are not really suitable for breeding barbs. The floating "traps" are really for livebearers only more then for egglayers. If you remove all the other fish, you MAY have a chance of them breeding and some of the eggs making into the plants and the fry surviving. (Not a good chance tho.) Conditioning is best done when the sexes are separated and spawning will happen much quicker when they are separated as well. The reintroduction to each other heightens the desire to breed before they lose each other again (as in nature.) At this point, however, if you don;t want to get rid of the other fish or use a separate tank, I'd not concern yourself with them breeding. If it happens, it happens. If any survive, they survive.
Sorry I couldn't be more positive for ya.
Oh, and BTW, your "Giant" pink kisser is still a baby. lol They get to approx.12" and don't even start breeding until they are about your fish's size (maybe even a little bigger.) Time for a bigger tank