I started my aquarium 2 months ago. I got a black molly female 1 month ago, and 1 week ago she had 15 fry. They are all doing great! They are in a 20 gallon planted tank with the mother (She is not eating them - that's why I left them in the big tank) I am doing regular water changes and am checking water parameters every few days - It's all been good! This morning I noticed one of the fry swimming at the top (Not gasping). When I fed them that one fry didn't eat. It is a little smaller than its siblings. I saw something white worm looking in its mouth. When it opens its mouth the worm looking thing sticks out about 1mm. I put the one fry in a glass to take some pictures (Attached below) He is swimming around in the glass and looks fine except for that white worm looking thing. and he's still not eating. I am not sure if I can save this little guy, but I am afraid that the other fry and the mother might get whatever that thing is. 1. What could that white worm looking thing be? 2. Is there any way I can save this guy? 3. Could the other fish get it too?