Hi, last week my gouramis spawned in my main tank (I didn't do anything to enhance their spawning), they are in a tank with common livebearers such as mollies and guppies, unfortunately the eggs didn't survive even though the male was fiercely defending his nest. Anyway the male and female just don't get along anymore at all, if they see each other they will turn really dark and bite each others lips and I have just witnessed the male curl into a ball which is confusing me, I don't know what I can do because I don't have a spare tank, my tank is 4 foot and I should probably mention that they are blue (opaline) gouramis, any advice will help me a lot, thanks 
