Many years ago, when all I worried about was water temp and Ph, I had a 55 community tank, very heavily planted and with U/G filters. The pair of dwarf gouramis I had were great, always active and perky. Every few months the male would shred some wisteria and make a bubble nest, then his colors would get dramatically more vibrant and he would coax the female to the nest and wrap himself around her sqeezing her eggs out and fertilizing them at the same time. He would then chase her away and pick the eggs up one by one and blow them into the nest.
This cycle of bringing the female to the nest and breeding would be repeated three or four times then it would be necessary to remove the female as he would get too aggressive. He would stay at the nest maintaining it and replacing any eggs that fell out. When the fry hatched he would keep blowing them back into the nest until such a time they were free swimming then he would start eating them. I'd remove the nest and fry and raise the littl'uns in a shallow bowl.
My experience with dwarf gouramis has been excellent and I will be adding a breeding pair to my next tank...cycling as we speak....
By the way, the tank temp was 78 and ph about 6.8, water was a mellow color from tannin. Kept that pair for about three years until the heater stuck full on, boiled everything and cracked the bottom out of the tank...my wife never quite recovered from that as I was working in Japan at the time!!!!!!!!