I have two that keep trying to breed. They shoot into the water at least once a day for 4 days now I've watched this, even caught a video of it. The climb on top of the rocks, near the highest peak and shoot their sperm/eggs? They are no more than 6 inches from each other and it is usually an hour or so after lights have turned on. Is this good? Will my tank get overrun? I'm guessing it won't since it looks like they are shooting out the same thing. Do I have two males? Are they hermaphrodites? But they only do it where the flow is coming in, hence it's getting spread though out my tank. I know most is probably going into my overflow and into the filter sock, but I'm curious what to expect.