tumor or growth

Hey all, First time posting, would like some advice on a health issue with my 5 year old fire eel. Over the last month he has developed a growth or lump under his skin, doesn't appear to have broken the skin fully or have any obvious infection/fungal looking surface to it? He has been fine...

Hey all, today I went to pick up a tank from someone getting out of the hobby and they had 3 goldfish in the tank. Tank was def neglected and with further inspection bringing the fish home, two of them seem to have some white fleshy bumpy lumps on body. One is on the gill plate, another on its...

Can anyone tell me if this is a growth or tumor I've been told growth what do I do about this it's grown this big in 6 months