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Derek Broughton · 07-05-2008, 02:10 AM posted to rec.ponds.moderated

wrote:

A lot of aquarium fish simply stay small in a smaller tank, ie. large
tank - large fish, small tank - small fish

That's not really true. Fish in small tanks tend to be stunted by poor
water quality. Experiments have shown it's possible, if you keep the water
quality good, to grow fish to practically fill their container.

Is this the same with the Koi?

There are of course aquarium fish that do grow irrespective of the
size of their habitat..

Because somebody keeps the water quality up...

That said, an 8m x 8m x .5m "aquarium" is much bigger than what most people
keep koi in. It's not the actual size that's a problem, it's the depth.
Koi develop better with depth, but I think they'll cope fine with it -
assuming that ice doesn't get too thick.
--
derek