by: Brett Fogle
With air and water temperatures dropping in most parts of the country, now is the time to greatly reduce the amount of food you are feeding your fish.
When your water temperature starts falling below 65 degrees, you should consider switching your fish food to a more digestible wheat germ food. At lower temperatures, the good bacteria in your fish's digestive tract become less active, and have harder time digesting their normal high-protein diet.
In colder water temperatures, below say 50 - 55 degrees, then you should stop feeding your fish altogether. Even though they may eat, and seem hungry, you can actually harm them by feeding them their regular diet.
In some cases, undigested food can cause health problems in fish and trouble with their digestive tract. So don't feel bad that they are going hungry! Pond fish and KOI can be like little underwater pigs with fins - they will continue to eat because they dont know any better...