Besides the special adaptation to the environment with the labyrinth organ and for the Asiatic species the attractive pattern of colors the way of reproduction appeals to the imagination. Perhaps it is of less knowledge that far from all labyrinthfishes are foamnestbilders; mouthbreeding and egg layers are patterns of reproduction that are found to. As far as the foam nest builder one could speak about a basic behavior that shows common characteristics with all the species. To provoke that behavior it is necessary that both partners see each other; by that specific hormones are formed , tat at their turn are responsible for the ripening of the gonadale secretions. The time for this can be considerable short but long enough for the male to build a foamnest and pay his attention to the female by impressing her by wide spread fins. The foamnest itself consists, depending on the species, of only a few little bubbles at the surface or underneath leaves, for specific species also in the middle water layer and a very compact whole consisting out of very much little bubbles, even reinforced with algae and particles of plants. Bu the most of the foamnests are rather loose and are underneath the water surface. The foambubbles are made by the male with atmospheric air that he take-up at the water surface.