I actually had a pair of peppereds spawn on me completely by accident. This was early days in my first tank when I didn't know any better about numbers and such and just did as LFS said. Tank was a 60L community and planted with smooth pebble and stone substrate. Kept at 26 degrees and while I never water tested in those days I'm guessing the pH was the same as it is now, which is 7.1 or 7.2, hard to tell and ammonia and all that was fine otherwise everything would of died lol, never had a single death while I had that tank, which knowing what I do now, was a miracle. Anyway, Oone day started finding eggs on the glass. Got rid of them when I saw them but I guess I didn't get them all. I ended up taking the pair back to the LFS once I had done the research on them and realized that they weren't ideal to stay with me. When I gave the tank away because I was moving for work for an unknown amount of time, I finished catching the fish and began taking substrate out when I saw movement. Three baby peppereds! Somehow they had hatched and survived without me ever noticing.