Odds are its water quality. Bigger fish kick first when water
parameters go down....

On Thu, 1 Mar 2007 22:14:24 -0600, "sue"
wrote:

Can anyone tell me why 4 large koi would die and 4 goldfish not?I have 8
fish in a holding tank for the winter and they all were fine and one day my
koi are dead ,no sign of disease or anything.The other smaller one are
fine.Were they getting too big?Needed more room?




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I forgot more about ponds and koi than I'll ever know!