Last night I noticed my female endler had a white patch on her tail but I couldn’t do anything besides trying to separate her last night so I just put her in a container and floated her in my 20 gallon. She jumped out... so no pics since she’s swimming around in the 20 gallon now. The white patch doesn’t look fuzzy and it doesn’t seem like a bump. It just seems to be in her tail. I’m guessing it’s bacterial and since she’s a new addition and gave birth to fry the first day I’m hoping it’s stress related and should clear up on its own. What should I do?