If you want to spawn them yes leave the pair in that tank alone. You will need to start some insuforia or green water to feed the fry. This may sound bad but Duck weed is a great plant for them to build the bubble nest. You will want the tank at about 80F and the tank will need a lid. The fry are prone to breathing deseases if they take in cold air. The male takes the fry to the surface for air for the first few days of their life. If you can see them once they are swimming on their own the male can be removed as well. Keep the lid on the tank for at least 3 weeks to give them a good start. You will also want to get some golden pearl fry food get the smallest they make to feed the fry until they can regular fry powder. Water changes are good but wait untill you can make sure you do not suck out any fry. I hope this helps.
One more thing Gouramis are easy to sex The females have a rounded dorsal and anal fin. The males have pointed dorsal and anal fins. Good luck if you do decide to breed them. Oh one other thing you will want none to very little surface disturbance when they spawn and have the bubble nest. Gouramis are air breathers so do worry about them dying without a filter going for awile.
