8

According to What Sturgeons Want, sturgeons need to be fed during winter or they will starve. Unfortunately, the amount they eat is trial-and-error: throw some pellets, wait until they eat, and track how long it took. If they quickly, throw more pellets, etc. Remember they are carnivores, so choose appropriate food; don't hope that they will eat plants ...


7

The Koi simply won't eat the food if it's too cold, they know their metabolism isn't fully functional and therefore they couldn't process the food. The Koi will likely sit on the bottom and the sturgeon (if hungry) will come up. Just feed sparingly and none of the food will fall to the Koi, not that they'd be interested anyway. If the Koi are still active ...


3

In researching another answer, I found this guide speaking about feeding fish in winter. Here are a few paragraphs to give some context. (It's a guide aimed at koi and/or goldfish pond owners, in case you were wondering why it says don't feed your fish at all.) As the water temperature of your pond falls, the fish will require less food. Watch their ...


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