I have a 3 years old gold fish with a big fan tail. I heard that they live about 2 years in captivity. Is it true? I'm keeping him, along with 4 other fish (a black moor with very big eyes, he is around 2 years too, and I don't know the name of the others, think there are plecos, they are really big, they have around 3 years too, and one of them has some kind of prominences on his had. My problem, aaa , the problem is that he (the goldfish) is just sitting, doing nothing, in the middle of the day, like he is sleeping or something. Is he sick?