How do you know when your Balloon Molly is pregnant?
You can know if your Balloon Molly is pregnant by obseving near the back of the Molly's stomach. If it's pregnant, the bottom and back of the stomach should form an approximate 90 degree angle. You will also need to observe the stomach before it is assumed pregnant, in case if the molly has been like that.
Yes, it can! I have researched quite a bit on freshwater aquariums as well as molly breeding and from my personal experience owning a gold dust molly and balloon mollies, they can interbreed within their species, my gold dust male impregnated my balloon molly, and her fry turned out to be a cross between the two types of fish, which were adorable! You want to check for signs of her being pregnant, their should be…
Look at the stomache of the molly. If it is fat and has a black spot in the middle, it is pregnant. Quickly take her out of the community tank and put her in an isolated tank with a few plants. Once she has popped the babies out, put them into another isolated tank. Feed them molly fry food that is really small.