Should Honey Gouramis (T. chuna) be kept in pairs, or can you have just one?
 

I really like these fish and am thinking about them for my peaceful community tank. I would rather have just one, a female, so I don't have to worry about their mating when I don't want them to or have aggression from guarding a bubblenest/fry. Would their quality of life go down at all if there was just one female as the only Gourami in the tank as compared to when kept in male/female pairs?

Also, what are the best ways to sex them?

You'll find the answer on sexing in our profile; click the shaded name, Honey Gourami. Profiles are under the second tab from the left in the blue bar across the top of the page.:-)

Depending upon tank size, this species does well in a small group, or in a pair. Single fish (the male is more colourful) on its own is fine--though I can't speak for the gourami if it will feel lonely or not.;-)

Byron.

So no has ever seen a positive change in a Honey Gourami compared to being kept alone or in a pair?