How to feed Koi and Goldfish, including winter feeding, what how and when to feed Koi. All about feeding Koi.
Koi Feeding - Feeding Koi - Detailed Information about Koi Feeding

FEED YOUR KOI
Medicated Food. An excellent way to get antibiotics into swimming fish you couldn't catch or handle; but only if htey need it. Medikoi is a very good one, probably the best. Aquameds.com
FATS, CARBS AND MINERALS
Fats

Fat is important in a diet to carry energy and at-soluble vitamins to the fish. Fat supplies a dense energy source. However, fat is a dangerous component in foods because when it gets too high, it can cause the food to spoil more easily, and can even function as "moisture" for the growth of certain moulds. So manufacturers are VERY careful about the fat and moisture content of foods. Fat content of 3-9 % are safe, reasonable levels.

Carbohydrates

Carbohydrates are the immediate energy source for the fish. Due to their carnivorous nature of the eons, fish tend to be poor at utilizing carbohydrate (Trout are utterly diabetic) so they may store it in the muscle or discharge it in the waste. This doesn't change the fact that it's important. It's usually not listed as a percentage on most fish food labels. I am not attaching too much significance to it in this article.

Minerals

Much discussion exists about the mineral requirements of fish. I personally recommend that if a food for Koi contains some extra calcium, and contains a low phosphorous, it could be considered "better" than a food that pays no attention to the Calcium and Phosphorus.


FISHMEDICINES

Fish Medicines
Learn about fish medicines, what they do, and where to get them.





Aquameds.com
Do you have a business that markets fish medicines but you want to be sure you're getting a good price, good information, and trusted support? Aquameds has a full product line for your business.

Koi Beginner
Once you've leapfrogged through this tutorial you will have a solid, working concept of the Koi hobby and what it's all about. This is done just about exclusively with video and very little written material.

Fish Medicines
Learn about fish medicines, what they do, and where to get them.

PondCrisis.com
If you have a koi, pond or fish problem, this site takes you through twenty easy questions and at the end you know what you need to fix in your pond to create restored Koi health.

KoiCrisis.com
Koi Crisis has a symptoms chart by system you can choose the symptom by fish part, and resolve a lot of Koi pond fish problems or at least, learn about them understand how to remedy them.

Koi Food & Feeding
What should you feed your koi? How many times per day? Is Corn really that bad in a Koi diet? What are the most common feeding mistakes people make? What's the best food?