We literally purchased this female from the pet store last night; introduced it to the tank this afternoon. And now, tonight, we see this white stringy thing hanging from the bottom of the fish. Is this a worm? It showed up so fast!
Be it white poo or a worm either of those are signs of parasitic infection and paired with bloat to boot. I would suggest a good anti parasite medication or if not (im not sure here bu i think) use aquarium salt 1-2 tsps. per gallon and keep the water PRISTINE.