I had a pair of electric blue damsels that repeatedly spawned a long time ago. Since they also got very territorial and aggressive to other fish, I moved them to a tank of their own and they kept right on spawning. From my research at the time, the fry needed to be started on rotifers, which were difficult to come by back in the 90’s when I had these fish, so I never was able to raise them. Eventually the aggression escalated to domestic violence and I ended up with only one fish. that fish remained alone for the rest of its days