I just did a water change a couple hours ago and found some new fry. I also put the mother's in because I suspect they will give birth soon. I went to go scoop poop outta the nursery tank and I found some weird little green bubble thing. It came out of no where. Did it come from the fish? I scooped it out with a net and I am unsure of what the hey it is. They are Guppies if you wondering.