So I was doing some routine maintenance on one of my smaller tanks, I had recently added some paradise fish in there along with some mollies. The LFS was trying to get rid of the paradise fish and I got them for free. I've two females and one male. (I think) I noticed all thee bubbles and got a fright! Like it was some sort of weird disease or something, but now I'm wondering is it breeding activity? I don't know alot about these fish so any information is great!