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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!

Congratulations to our own Jeff Rasche for placing 3rd in the Grow Out Contest! 

We've talked about it before in this blog - but here's more proof that water treatment plants are unable to deal with some of the chemicals found in the water, and that they are affecting our fish.  If you are using 'city' water in your pond, this article should be of interest to you.  And what about those of us using 'well water' in our ponds - there are no treatment plants for us?  Makes you think, especially as our Koi are long-lived pets... 

There are many physiological adaptations to stress.  Read new research that indicates that stress makes our Koi shy...

How do fish communicate?  Read about the latest findings from research...

While this article is about farmed fish, it certainly applies to our Koi.  Read the research about the benefits of fish exercise...

When the water temperature is higher, our Koi require more oxygen.  Read about how global warming may affect all fish species...

Here's the problem...  If you keep Koi of both sexes, they spawn.  You get 1000's of babies.  If you keep just females, they can die of egg binding - they have to lay their eggs eventually, without males, they tend not to...  If you keep just males, you can't show them, and they never grow as large nor do most have pleasing body shapes.  So what's a Koi keeper to do?  What if we could sterilize Koi?  Read about new research that might evntually be of help to Koi keepers everywhere...

In both our Koi and commercial aquaculture, the delivery of antibiotics has been by individual injection.  Read about a company that is researching the use of functional feed additives as a replacement to injections...

Is your pond too small to keep Koi?  Or perhaps you have a large acquarium, and are tired of short-lived fish?  Consider Goldfish!  The live long lives, and comets can grow up to 12"!  Even fancy varieties live for years, are very easy to care for, and like Koi - they have amazing recuperative capabilities!  Read this story about how a fancy goldfish became this aquarium keeper's favorite fish...

This article is a continuation of what we've learned about fish intellegence.  Turns out that learning how to motivate and stimulate fish could be the key to their very survival in the wild!  The parallels for our Koi are clear...

 

While proponents of the primordial soup theory argue that electrostatic discharges or the Sun’s ultraviolet radiation drove life’s first chemical reactions, modern life is not powered by any of these volatile energy sources

More than once I've heard "take care of the water and the water takes care of the Koi." That sure sounds good, but truly understanding the Nitrogen Cycle had baffled me until I took the K.O.I. Certified Koi Keeper course.

UV (Ultra Violet) Lights are a good way to get rid of algae bloom (green water) during the warm Summer months. K.O.I.’s recommendations on UV units can be found in the Construction module (how to install) and the Filtration module (how to operate) of K.O.I.

UV lamps are usually isolated from the water media by a sleeve made of quartz that doesn't block UV. Those sleeves are durable, unless you accidentally break them, but the lamps are not. Vendors say that UV lamps need to be replaced every year. I was wondering how to test a UV lamp to see if we could prolong its life longer. I called a UV lamp manufacturer and found a way to verify if the lamp+sleeve assembly still emits UV, without resorting to an expensive UV test equipment.

This article es from the August 2017 Newsletter of the Central California Koi Society, and written by Rosimeri Tran - republished here with her permission.  Yamato Nishiki are one of the most beautiful Koi varieties, as Rosimeri explains...

Adding salt to the water of a sick tank or quarantine tank can help sick or compromised Koi.  In essence, it makes it easier for them to breathe, just the way supplemental oxygen helps people.  To learn more about how salt reduces the osmotic pressure gradient, take K.O.I. #206 - Physiology - CLICK HERE for course description.  Here's what Dr. Richmond Loh, the Fish Vet from Australia has to say about salt...

Koi have many superpowers, but...

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Congratulations to our own ANDREW MOORBY, Director of Finance for K.O.I.! 

A commercial fisherman pulled a live Asian carp out of a northern Illinois river last week about 9 miles from Lake Michigan, prompting a furious dragnet to determine whether more of the voracious fish have evaded electric barriers designed to keep them out of the Great Lakes.

While we may have control over the amount of water we put into our ponds, we don't have control of what's IN that water.  Turns out that many water supplies have been inundated with chemicals from sewage treatment plants.  Wells are also a problem, as chemicals leach into ground water supplies.  This article is about a study that concluded that 1/5th of male fish were transgender or hermaphrodites.

Work is being done to improve fish welfare, and write better standards for farmed fish or any fish kept in cativity.  This has implications for Koi keepers...

Salmon are some of the most studied fish in the world because they are a target for aquaculture and have been farmed in many countries.  Adding Beta-Glucans to feed has been successful in aiding salmon health.  Beta-Glucans are used for people too, and might be something to look for in Koi feed of the future...

In K.O.I. Nutrition courses, pond owners are taught to read the ingrediants label on their Koi food bags, and fishmeal should be one of the first components.  But is fishmeal sustainable, especially as it is being used in many aquaculture settings other than just Koi?  Read about a new alternative you may see showing up soon in Koi food.

Ever wonder how our Koi can manage in such a wide range of temperatures and pH, and find food in opaque water?  A new study shows that high genetic diversity is the key.

At least that seems to be the results of one studey.  Upgrades to a wastewater treatment plant along Ontario's Grand River led to a 70 per cent drop in fish that have both male and female characteristics within one year and a full recovery of the fish population within three years, according to researchers at the University of Waterloo.

Ever wonder why are Koi are afraid of nets and so hard to catch?  Turns out it's an evolutionary advantage to be cautious.  New research supports the creation of more marine reserves in the world's oceans because, the authors say, fish can evolve to be more cautious and stay away from fishing nets.

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


 

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