• Something Different from Marudo

    I’m always on the lookout for something new and interesting, for me it keeps things fresh just the same as it does for the breeders producing them year in year out.

    It’s becoming common place in Japan that the bigger breeders have varieties they produce as a hobby. For example, Omosako the world renowned Shiro Utsuri specialist produces Goshiki and Kujaku, Choguro who specialises in Purachina breeds Beni Kikokuryu and Goshiki to satisfy his own interests.

    One breeder which ended up taking their interest to a whole new level was Marudo Koi Farm. One of the best Gosanke breeders in the world began breeding Chagoi and Karashigoi because of their interest in jumbo koi. The excellent fast growing lineage they created soon caught great traction and became a commercial side to the business. They now produce Chagoi, Ginrin Chagoi, Karashigoi and Doitsu Karashigoi for koi hobbyists all over the world.


    During my last visit to the farm in June of this year I came across a pond with some very interesting Ginrin Soragoi and Ginrin Ochiba. Upon closer inspection, I noticed something very interesting with the pigmentation of the Ochiba. Not only was the colouration exceptional and unique I could see clearly that the pattern was following the same placement as the beni of Asagi. I asked Keiko san (daughter of the boss) if what I was seeing was intentional and she confirmed that it was. Hisashi Hirasawa the boss of the farm had the idea of crossing Ginrin Soragoi with Asagi and this was the second year that he has been trying to develop these unique offspring.


    There was never any chance that I was leaving without them and with a good mixture of different examples in the pond it would give me chance to see how they would develop. It was also clear that the Asagi characteristics were coming through in the body shape as well with big heads, mouths and nice long bodies, something I am always keen to see in koi with great growth potential.

    The pictures and videos featured in this post are currently 5 of the best examples. 3 of these clearly show the Asagi style beni pattern below the lateral line and on the face. Only time will tell exactly how they will develop but for now the unique style of the fish makes them very admirable.

    • Fred

      Posted Sep 07 2017

      A very interesting combination I'd love to see these with a few years growth.

  • Top Tips for Maintaining a Health Pond

    Maintaining a healthy environment for your koi is fairly simple and doesn’t have to cost a fortune. You don’t need all the latest gadgets or hundreds of pounds worth of additives to create good water. What you do need is a good routine and some effort, the rest just falls into place.

    Here’s some of my top tips for maintaining a healthy pond:

    1. Removal of mechanical debris. Waste sat in your pond or filter system damages your water the more that it sits there. Through several processes waste breaks down into carbonic acid which will de-stabilise your pH. A high level of dissolved organic carbons (D.O.Cs) also affects the appetite and growth of your koi. Ensure that debris is removed from your filter system regularly, good pond design should leave very little areas within the actual pond for the debris to build up so all of the work can be done in the filter system.

    2. Regular Water Changes. You probably think this is very basic advice but new water coming into the pond is very important - not only to dilute the build up of waste in the water but to help restore some of the missing minerals and control the carbonate hardness (KH). Koi like stability so 50% water changes aren’t ideal but small, frequent changes will keep things ticking over nicely. It’s also advisable to use a water purifier to remove harmful chlorines and chloramines from the incoming water. The very things that are there to make the water safe for us are very damaging to your koi and the whole eco system.
    3. Maintain a good KH.If I could have only one test kit it would be KH (Carbonate Hardness) and I would class this as the glue that holds the entire system together. As said before, koi like stability and no more so than with pH, a severe swing with this can kill your koi in no time. KH acts as a buffer for pH, mopping up the acid in the water and keeping it stable and the bacteria and organisms in the pond perform better when the KH level is higher. I would recommend keeping a level of around 6dh for optimum performance.
    4. Correct Turnover Rate. There will always be differing opinions on this and in truth I could write a book about getting the correct turnover rate. In this instance however I am generalising and going for the one glove fits all approach. The turnover rate is the amount of times you pass the water in your pond through your filter system which also links directly with how much time the water spends in your filter system for it to do its job effectively. For most koi ponds and filter systems a turnover rate of once every two hours will do the job. If you have a 2000 gallons pond you will look to turnover 1000 gallons per hour. This makes a big difference to your water quality and clarity; a larger turnover will work in some instances but some filter systems and ponds can cause the system to work inefficiently.
    5. Be Careful What you put in the Water. There’s a whole range of medications and additives available for solving various problems but you should always pay attention to what you are adding to the water and the effects it can have. A fully established pond is a delicate eco-system which can easily be damaged. It’s necessary to medicate sometimes but that should always be done with proper diagnosis to avoid over medicating as many of those chemicals damage the filters, fish and whole system if overused.

    These five tips are a basic part of koi keeping but if done properly and adhered to, you minimise the risk of any major problems leaving you to enjoy your happy, healthy koi.

  • Event - meet Katsumi Fukushima

    A few years ago as Koi Wholesale started to grow, we made a promise to provide the healthiest and highest quality koi to our customers.

    I’m proud to say that as we enter our seventh year of business we remain true to our word.

    This year we’ve already undertaken five buying trips to Japan and next month we’re flying over one of the top breeders from NNBC, Katsumi Fukushima for an invitation-only event.

    Katsumi will spend time with our customers sharing his knowledge and passion and those in attendance will be able to hand pick some of the best pieces. Katsumi is well known for breeding unusual varieties such as Beni Kumonryu, Doitsu Ochiba, Hariwake, Ochiba, Doitsu Gosanke and Ki Utsuri.

    As well as some beautiful tosai we plan to select 100 stunning nisai for the event too.

    Koi Wholesale is synonymous with quality and we’re delighted that we can share some of our incredible Japanese finds with you.

    We’re proud that we’re able to help you and your customers access the very best koi in the world.

    This is the reason why we founded Koi Wholesale and the reason we’re the UK’s number one wholesaler. Thanks for your ongoing support.

  • Breeder: Hoshkin

    We have had an amazing trip so far and cannot even put into words what we have been able to be part of.

    Yesterday World famous Kohaku breeder Hoshikin, gave us a heads up when he was arriving back with a new harvest so that we could be first there- this again allowed us first pick of the harvest.

    As you can see from the video, there were some serious nisai - all between 50-58cm.

  • Marushin Koi Farm

    Yesterday I was invited by Mitsuhiro Tanaka to go and harvest with him at Marushin Koi Farm.

    This was our opportunity to get first pick of the Koi as soon as they were lifted from the water- this allowed us to pick the absolute best of the best.

    Opportunities like this are what makes Koi Wholesale the business it is. We have spent years building these relationships and we continue to do so.

    This isn’t just buying and selling fish, this is about a true love and passion for what we do.



    • martin

      Posted Oct 13 2016

      So wish i was there.

    • Mick

      Posted Oct 13 2016

      Looking foreword to seeing what jewels you pick. Have a good trip. Mick