Join Date: Mar 2004
Location: Louisville, Kentucky, USA
It sounds like you've got a mystery going on.
I'm with the previous poster, could be environmental. Parameters are important, though gouramis aren't necessarily all that particular in relation to them.
Secondly, eons ago it was noted somewhere (God, long-term memory's going now) that any gourami with "rocking syndrome" was infected with a parasite. Now, where one came from . . . you'd know better than I. The gasping is pretty much part of the "rocking syndrome," though gasping is associated sign/symptom of many things.
Try to remove them, find a parasite treatment that isn't copper based (I recently learned the horrors of copper in any tank). I used to use Maricide (sp), but they've changed the formula and I find it less effective.
This could be environmental though, and that would be my first suspicion. Oddly, none of your other fishes seem to be showing this same distress--again, gouramis are not usually the "first to go" when something is awry in water quality.
Good luck and I hope they come through ok.