tumor

My senegal has a lump on her anal fin. He's had it since I got him (6-8 months ago) and it doesn't seem to be causing any problems. I cannot tell with 100% certainty if it's grown, but it doesn't seem to have. I can't see any other lumps externally. I am wondering if anyone knows exactly what...

I have an albino red oscar and he has a tumor what do I do or is it ok to leave it alone plz tell me what to do https://drive.google.com/open?id=0BwUtn34-05J4OE82dm5sR21NTmc

I just got my first tank almost a year ago. It's 35 gallon fresh water with about 20 some fish of and maybe 10 different species that are all doing extremely well and seem to be quite healthy. I learned my lesson the hard way when I added fish too quick and got ich. I treated it and...