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
KOi CANNIBALISM - CARNIVOROUS KOI
Koi Cannibalism

Well, what discussion of Koi Nutrition would be complete unless we talked about the Koi's more jocular habits of eating fry, frogs and each other? More fantastic than fact, here are some things you might not know.

Large Koi and large frogs

in the Springtime, there's these little frogs called Spring peepers. You can here them in low areas of your yard or the woods, living in puddles. In the cold months of Spring they spawn and lay strands of eggs. And sometimes, they get in your pond, and a big Koi catches one. Or, like at my house, all the Koi catch one. And so you get up in the morning and all your Koi have a pair of frog legs sticking out of their mouths and they like the taste pretty good, but they can't work it down. So they swim around with the frogs in their mouths like pacifiers. Some of the largest fish can get the frogs down, some eventually spit them out and you have to net them out or they will decay and make a mess.

Koi in tanks with Oscars

I saw two different situations of similar type. A large fish tank with the unlikely tank mates of Oscar Cichlids *and* Koi. The Koi were initially brought home as live food for the Oscars instead of Goldfish or guppies. However, the Koi eluded the Oscars and, as Americans always pull for the underdog, the Koi were allowed to remain in the tank with the Oscars. But the gentlemen keeping the Oscars were only actually "keeping" the Oscars (Good luck, Koi!) so the food being put in the tank was suited for the Oscars: either worms or little fish. To survive, the Koi became very effective and ferocious guppy and goldfish eaters. Habituate or starve. I've always said that.

Koi fry and the Cannibals

Finally, you should know this about baby Koi. A momma Koi will lay many tens of thousands of eggs per spawn. And her babies will be very numerous. And these fry mature at differing rates. The brown solid-colored babies will mature faster than the bright solid-colored fish and these babies will mature more quickly than any two or three colored fish. So it happens that often you see several much-larger baby fish in a spawn swimming about with a tiny sibling tail in its mouth. These cannibals eat prodigiously and the more they eat the bigger they get and the faster they get there. So breeders know to remove these cannibals. If you don't you will have a nice collection of Ogons and no multicolored fish in a spawn. So Koi can be cannibalistic when they're fry. Later in life, it would be exceedingly rare to see a large Koi eat a small one.


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?