I have a female guppy that just gave birth last night and when I moved her to another to big tank to take a look at her she had what look like cotton on her mouth a small amount on both ends of her mouth I don’t have a mother tank but I do have something that I can attach to the side of the tank. so that what I put her in. i treated her with stress guard and imagination Bacterial remedy and some antibiotics and Fish Aid Antibiotics Fish Doxycycline. I noticed she was big and not giving birth for a week and boxed so she was moving between tanks every other day till she gave birth. I had a fish die from this before And don’t want to loose this one. i need help!!!!