So, to start off my goldfish I have had for a year is in a glass vase, about two and a half gallons. This morning, I woke up, he was lying sideways and kinda flapping around, completely disoriented nd his tail sticking up. He could swim straight for little bit, but would go back side ways, and was very lethargic.It had been awhile since I cleaned his tank and fed him, so I immediately did those things. I then noticed that his color is changing. He has black on the tips of his fins now. Well, when I got back home, he is doing alittle better. He will stay level, but he doesn't swim much, and he still will not swim to the top. I think his stomach tools a little bloated, but not much. Any help or tips is greatly appreciated!!!!!