Spring Into Spring
As the ice melts, preparing for Spring. There's some things you can do which help your fish emerge healthy from winter. Salt, and medicated food are useful and simple. Read on.
Wintertime For Koi and Ponds
Koi and Goldfish hate winter. You see, they originated in rivers. (Egg scatterers with torpedo bodies and no maternity behavior whatsoever.) Rivers don't change temperatures too terribly much. In ponds, wintertime isn't nice. Here's an article on what you can do to make it better.
Cold Water Feeding of Koi and Goldfish In Ponds
When water gets cold, "good" bacteria slow down, and Koi metabolism slows, too. How to feed in cold water, and when to stop.