[Sneaky]

MyBird - I think we will just have to agree to disagree.

I used Kokos goldfish only as a guide to determining individual
goldfish types, and much of the info there is faulty, but still better
than most other goldfish sites out there.

I still disagree about kuhli loaches. 24 inches of fish, no matter
how slim or low on the bioload is still much too much for a 10g tank.

Also remember when qouting temperatures, that the temperatures
mentioned are averages. This means they take all the temperatures
found in the wild and average them. This excludes both the low end,
where goldfish and bettas (who come from the very close environments),
experiences temps below freezing in the winter, and above 80F in the summer.
Fish are resilient, and capable of much wider ranges of temperatures that we give them credit for. We only go by "averages".
The problem comes when you expose fish to drastic temperature changes
of 10 degrees or more in a single day - in the wild such temperature changes would occur over weeks, rather than hours.

As for people keeping their houses at 72 ...brrrrr.
I keep my house at 78 in the winter, and it never drops below that
in the summer.
It would be impossible for me to keep a fish that could not
live below 76-78F, as my house simply does not go that low,
and I would need to invest hundreds of dollars on a chiller
to get below that.