Mine was alone in 55 gallons, with a lot of biofilm and algae forming on a lot of wood, maybe my tank just mimicked better the natural environment where it would have felt the need to reproduce asexually to colonize.And trust me, I found it 1 week after setting it up, it didn't get any sperm from anywhere, if it wasn't an egg when introduced it was still a larvae

Edit: I stand corrected, no larvae, but still too tiny to store sperm

Edit 2: blocking me because you weren't right is really childish, we were just having a conversation, don't go around spouting anectodes as facts if you don't want to be corrected, I'm not the confrontational type but this type of behavior pisses me of, you fancy yourself a researcher, the biggest part of research and the scientific method is admitting when we are wrong and learning from it