Here are the best shots I could get at the time, but 3-4 barbs in the tank are really swollen in the belly area. The ones who are fatter seem to "gasp" some and aggression has been higher in the tank recently. But there are also some other factors that could play into behavior. I have taken the aggressive gourami out of the tank, and drastically changed aquascaping which stirred up some sediment.

Thoughts?