Category Archives: Koi Fish Facts

Koi Fish Facts, including everything you’d want to know about keeping koi fish. How to care for your koi fish, and how to maintain a happy, healthy koi pond (or tank).

Cold Buy: Purchasing Your Koi in the Winter

If you’ve had your mind set on buying your next koi, you shouldn’t let colder[read more...]

Moving Koi Indoors: Overwintering Inside

Koi are Poikilothermic (cold-blooded) and have adapted to handle cold temperatures. Their metabolism and overall[read more...]

Water Quality and The Nitrogen Cycle in Your Koi Pond

The nitrogen cycle is an integral and vital part of the natural biological filtration system[read more...]

Making the Grade: How Quality Koi are Selected

As you look at your pond and the vibrant colors of your Living Jewels while they[read more...]

Doitsu Koi: Tipping the German Scales

Doitsu Koi are a fairly recent addition to the Nishikigoi universe. The word “doitsu” is[read more...]

Carp Pox and Your Koi

Cyprinid Herpesvirus 1, more commonly known as Carp Pox, is one of the oldest recognized[read more...]

Algae and Your Koi Fish Pond  

Got Algae? Here’s what you need to know about algae in your koi pond, how[read more...]

How to Recognize and Treat Common Koi Fish Illnesses

We have recently been posting about the different types of bacteria and parasites that are[read more...]

Dropsy and Your Koi Fish

Dropsy (which is an old-fashioned term for edema) is also known as Pinecone, Bloater or[read more...]

Pond Mates for Your Koi

With the varieties of koi that are available, it is conceivable that you will never[read more...]