I have a female guppy that does not look well. We bought her in June along with a male. They started reproducing so I moved her and 14 offspring to a 20 gallon tank at the end of September. Recently I noticed she was either staying at top or bottom of tank and not as active with tail bent down. At the time, she looked like she was ready to hatch so I thought it was just from late term pregnancy. I have not seen any new fry but I also no longer see eggs. She is still lethargic and I noticed a white cobwebby string off of one fin (pic attached) have not seen her scratching on decor or gravel. I did add a tank divider 2 weeks ago to try to separate male from female guppies. All other tank mates look healthy. I would appreciate any help in finding appropriate treatment.
20 gallon tank with Top fin silenstream filter, PH 7 Temp 80-82, nitrites 0, nitrates 40, feed tropical fish flakes. 15 guppies and 2 otocinclus catfish. Water changes last week.
20 gallon tank with Top fin silenstream filter, PH 7 Temp 80-82, nitrites 0, nitrates 40, feed tropical fish flakes. 15 guppies and 2 otocinclus catfish. Water changes last week.