Click on the ARTICLE TITLE or READ MORE to read the content.

Hello Koi Enthusiasts!

This blog is here to provide a spot for various things that do or might pertain to Koi. This stuff is intended for your entertainment, and is not meant to meet the stricter standards of our ebooks and courses, so use this info carefully and at your own risk. The short articles here may be descriptions of techniques that have proved effective, an introduction to new fish research, facts, graphs or just something FUN about fish! This information can be a springboard for your imagination and an entertaining place to learn something new. Information that was first published in Question of the Week can be found here.

The more we learn about Koi, the more FUN this hobby is - and we always say - if you're not havin' FUN, you're not doin' it right!

Copper is ubiquitous in our environment - from pesticides to pipe.  Some copper gets into our ponds and this study shows how even small amounts affect Koi in many damaging ways.  This study goes into great detail to show the effects on the brain, blood, liver, gills, and kidneys based on very low exposure to copper.

This study evaluates the toxic residual pharmaceuticals in the water as they affect algae, the environment and fish.  The results indicate that there are numerous other external factors that complicate the testing.  An interesting study, not directly related to our Koi, but certainly affecting our water sources.  The list of chemicals they tested for is staggering!

This research describes how monoclonal antibodies were successfully developed for use in diagnosing disease of carp (including Koi).  The results are then used to develop specific antibodies to detect Spring Viremia of Carp (SVC).  The hope is to develop a vaccination against SVC based on these findings.

This study examines the effects of nitrite poisoning, and how to prevent it.  As a further benefit, the study examines the carp's ability to recover.  This is something every Koi keeper needs to know, as it will be useful each time a filter is 'started.'

It was originally thought that analyzing white blood cells in carp was an indicator of the age of the fish.  This study refutes that finding.

This study investigates whether age or weight affects a Koi's resistance to bacterial disease. 

When a swab is sent to a lab for a bacterial identification (culture and sensitivity test), an API 20E test is commonly used.  But is it missing other pathogenic bacteria?

Heavy metals are toxic to fish, including our Koi.  Understanding the effects of heavy metals, and which metals are toxic is useful to Koi keepers.

In these 2 studies, other species of fish were tested to see if they could be carriers of KHV. 

Have you ever wondered how the immune system works in Koi?  Learn what organ are involved, and the effects of some immune modulators.

Attached are 2 studies showing the effects of 2 common pesticides - Cypermethrin and NeemAzal on Koi.

While it is winter here, it is the hottest part of the summer in Australia, and drought combined with high temperatures is killing thousands of fish in the NSW rivers.  What is actually killing the fish?

This info about Koi is from  Schäperclause, W.  Fish Diseases, Vol.1, 1991. A.A. Balkema, Rotterdam. p.195 & 198.

This article discusses the structure of gills, how to examine them, and how to diagnose disease.

This study examines the causes and effects of gas bubble disease.  While conducted with trout, it applies to Koi as well.

This article describes research which proves that there are no irreversible effects of using Clove Oil as an anesthetic for Koi.

This study reviews the effects, mechanisms, factors affecting and other water quality considerations of Nitrite Toxicity.

If you have ever wondered about the development of a Koi's immune system as it relates to defense against bacteria, this is a fascinating study showing how and when that natural immunity develops.

CLICK HERE to read online, or download the article.

We are often warned about the effects of heavy metals on our Koi.  In this study, the effects of aluminum and iron are studies in a pond of Koi that had become exposed to heavy metals from runoff water.

Malachite Green has long been used as a treatment for various fish diseases, and to treat fungus on fish eggs.  If you have or are thinking about using Malachite Green, please read this article, which reviews the negative side effects of Malachite Green, and suggests useful alternatives.

In this short article, the Centre Alliance Environmental spokesperson presents a counterpoint after the publication of the scientific report recommending that the virus release should go ahead.

This is from a wellness clinic in AZ...

New research from the Royal Zoological Society of New South Wales, Australia, indicates that while the initial release of KHV will have high mortality, repeated outbreaks are unlikely to recur at a magnitude to counter the reproductive potential of the surviving carp.  Interesting!  Read the abstract for the study  or download the entire pdf...

Recently the question was asked about how much does a Koi weigh that is a certain length?  Here are some thoughts, and a few charts...

What do you do with meds that are past their use-by date, or not needed any more?  Here is excellent advice from Doctors Foster-Smith...


!If you're not havin' FUN, you're not doin' it right


Subscribe to Blog