More fish

So there I was in the pet shop, looking for a tank, when three more fish tapped me on the shoulder and implored me to take them home. So now we have five. Honda & Barthez have been joined by Rula (flowing red tail), Kipper (looks like one) and Tabloid (red-top on white body).

I'm told goldfish are soothing. Well my stress levels have gone through the roof because I've read too much about keeping fish. I fear they have every disease possible, that I've got too many for the tank, that they'll be diseased, that the water has no oxygen, that I'll over/under feed them, that they'll be bored. All this because I was given two goldfish for my birthday. Nothing's ever simple is it?