Great. My sister's goldfish now appears to have columnaris. Gee whiz, amazing how things like this happen when you keep a comet goldfish in a 23 gallon tank and clean the water once a fortnight, if he's lucky. He's only just shaken off ich. My mum is protesting that he's been in much dirtier water than before and hasn't got sick. I pointed out that bad conditions add up over time to constantly attach his immune system. She said it's ridiculous, but I'm not sure which bit of "it" she is referring to.
My sister says that she doesn't do the water changes because my mum always does them without telling her, but why can't she take the initiative? She says she loves him and doesn't want him to go, but then why does she not do what she should to care for him? During holidays she has no excuse at all. During term time, she doesn't have much of one - I can care for 5 rats and two tanks, but she apparently can't find time for one tank.
My dad goes on about how the goldfish should be in a bigger tank (still inside, not in the pond like I want), but he won't do the water changes on a 55 gallon, and that still wouldn't be big enough for the fish to have friends.
Ever since I got in to keeping fish and started doing research, I've been trying to explain what is wrong and why he needs the water changes (getting in trouble if I try to do them myself, of course), and I get largely ignored or told that I am being boring for harping on about fish. I have been trying since we moved in here to get the pond set up for him, but there is always some reason it can't be done.
I'm sorry guys, I know I've said all this before, but they act all surprised every time the fish gets sick, and get angry at me for telling them why he is sick. I find it so frustrating. :( If my sister would give him to me, he'd be a much happier fish.