Koi Deformations

List of Koi Deformations

  • Gills – Covers blown, short, or outer edge curled.
  • Fins – Missing, angel, or dwarf.
  • Spine – Bent upwards or bowed.
  • Head – Dolphin, bent, too shot, or tadpole.
  • Eyes – Missing.
  • Dorsal Fin – Not continuous.
  • Jaw – Lower jaw deformed.
  • Body – Middle region distended.
  • Tail – Tail area thin, off set, or long pointed tailing.

By Blogger KoiLover

Koi Belly Diagnosis

List of Koi Belly Diagnosis

  • Normal – Like pushing a finger into muscle of upper arm when muscle is relaxed.
  • Unreleased or Infected Eggs – Like poking finger into fat on stomach.
  • Internal Parasite or Bacterial – Like poking finger into fat on stomach.
  • Possible Impaction – Hard.
  • Internal Columnaris or Bacterial – A red anal port.
  • Infection or Toxins Diarrhea – Leaking out of anal port when sides of the fish is gently pressed (fluid indicates infection or toxins diarrhea).
  • Internal Infection – Dumpiness (being short) near the anal port.

By Blogger KoiLover

Aqua Ultraviolet UV Series Test

Aqua Ultraviolet UV Series Test By Manufacturer

Real Science . Not Science Fiction

At Aqua Ultraviolet as with any successful business, competitors will attempt to mimic your products. While the old adage states “imitation is the sincerest form of flattery,” some of our competitors marketing claims have unfairly maligned our products and distorted the facts.

If you follow our competitor’s information then our units shouldn’t work at all, we wouldn’t even be in business, and yet we are number #1 year after year. Aqua Ultraviolet designs, tests and brings to market innovative products each year while our competitors criticize, then copy us.

We sympathize with the competition, how can they possibly market against the best? By making misleading claims about lamp performance, ultraviolet exposure, and chamber design, they are basically creating propaganda.

Let us give you the facts.

Simply put, Aqua Ultraviolet sterilizers will clear your water in 3 to 5 days, sometimes overnight and keep it that way. We don’t require you to slow your flow rates down to accommodate dirty green water; we eliminate it.

Aqua Ultraviolet has been in business for over 27 years, we have designed units for many industries including drinking water purification, food preparation and manufacturing applications. Remember that in many of these industries the specifications are very stringent. Some of our competitors, have even sought us out to design and produce UV’s for them.

Why do our products trump the competition? Here are a few reasons:

  • Our UV sterilizers are easier to use than the competitions, and they offer a longer lamp life – 14 months over about 9 months for the competition.
  • Our products are generational. We keep parts and supplies for all models, and the parts will always work within the generations.
  • Our high-powered units are compact. The competition’s are larger and need more space for installation.
  • Our lamps are rated at the end of life, not at the beginning.
  • Our initial testing is performed in-house and field tested, and then results are verified by independently laboratories. Therefore, the testing is fair and unbiased.
  • Our products come with Technical support people to help with installation questions and other inquiries.
  • Our technical support staff has even assisted consumers with competitors products.
  • A live person is available Monday through Friday 8:00 am to 4:30 pm.

Koi Feces Diagnosis

List of Koi Feces Diagnosis

  • Medium to Short Feces is a good feces.
  • Color of Food Feces is a good feces.
  • Long Thin Feces is a sign of not eating well (usually stress related).
  • Thick Long Feces is a little constipated or overfeeding (no time to digest).
  • Zig Zag Clear Long Feces is reabsorbed eggs.
  • Thin White Feces is a sign of infection unless fed with white food.
  • Clear Feces with Bubbles is not eating well.
  • Long Bubble Mucousy Dark Feces likes Sausage is gas trapped in floating foods. Foods are being fermented by gas causing bacteria.  Also fish are eating bubbles.
  • No Feces But Water Tinged Brown is possibly diarrhea with blood (life threating sign)

By Blogger KoiLover

Koi Length & Weight

Estimated Koi Length Table

Months Inches Years Cm
0 0.3 0.0 0.7
1 1.1 0.1 2.9
2 2.0 0.2 5.0
3 2.8 0.3 7.1
4 3.6 0.3 9.1
5 4.4 0.4 11.1
6 5.1 0.5 13.0
7 5.8 0.6 14.8
8 6.5 0.7 16.6
9 7.2 0.8 18.4
10 7.9 0.8 20.1
11 8.6 0.9 21.7
12 9.2 1.0 23.3
13 9.8 1.1 24.9
14 10.4 1.2 26.4
15 11.0 1.3 27.9
16 11.5 1.3 29.3
17 12.1 1.4 30.7
18 12.6 1.5 32.1
19 13.2 1.6 33.4
20 13.7 1.7 34.7
21 14.2 1.8 36.0
22 14.6 1.8 37.2
23 15.1 1.9 38.4
24 15.6 2.0 39.5
25 16.0 2.1 40.6
26 16.4 2.2 41.7
27 16.8 2.3 42.8
28 17.2 2.3 43.8
29 17.6 2.4 44.8
30 18.0 2.5 45.8
31 18.4 2.6 46.7
32 18.8 2.7 47.6
33 19.1 2.8 48.5
34 19.4 2.8 49.4
35 19.8 2.9 50.2
36 20.1 3.0 51.1
37 20.4 3.1 51.9
38 20.7 3.2 52.6
39 21.0 3.3 53.4
40 21.3 3.3 54.1
41 21.6 3.4 54.8
42 21.9 3.5 55.5
43 22.1 3.6 56.2
44 22.4 3.7 56.9
45 22.6 3.8 57.5
46 22.9 3.8 58.1
47 23.1 3.9 58.7
48 23.4 4.0 59.3
49 23.6 4.1 59.9
50 23.8 4.2 60.4
51 24.0 4.3 61.0
52 24.2 4.3 61.5
53 24.4 4.4 62.0
54 24.6 4.5 62.5
55 24.8 4.6 63.0
56 25.0 4.7 63.5
57 25.2 4.8 63.9
58 25.3 4.8 64.4
59 25.5 4.9 64.8
60 25.7 5.0 65.2
61 25.8 5.1 65.6
62 26.0 5.2 66.0
63 26.1 5.3 66.4
64 26.3 5.3 66.8
65 26.4 5.4 67.2
66 26.6 5.5 67.5
67 26.7 5.6 67.9
68 26.8 5.7 68.2
69 27.0 5.8 68.5
70 27.1 5.8 68.8
71 27.2 5.9 69.1
72 27.3 6.0 69.4
73 27.5 6.1 69.7
74 27.6 6.2 70.0
75 27.7 6.3 70.3
76 27.8 6.3 70.6
77 27.9 6.4 70.8
78 28.0 6.5 71.1
79 28.1 6.6 71.3
80 28.2 6.7 71.6
81 28.3 6.8 71.8
82 28.4 6.8 72.0
83 28.4 6.9 72.2
84 28.5 7.0 72.5
85 28.6 7.1 72.7
86 28.7 7.2 72.9
87 28.8 7.3 73.1
88 28.8 7.3 73.3
89 28.9 7.4 73.4
90 29.0 7.5 73.6
91 29.1 7.6 73.8
92 29.1 7.7 74.0
93 29.2 7.8 74.1
94 29.3 7.8 74.3
95 29.3 7.9 74.5
96 29.4 8.0 74.6
Months Inches Years Cm





The Koi Length Table is based on  Ludwig von Bertalanffy Equation above

Koi Weight

Use formula below to calculate estimated Koi Weight

Koi Weight = (Total Inches / 11.667)^3

By Blogger KoiLover

Koi Scale Types

List of Koi Scale Types

Based Type
Darker color at base.
Narumi (Hakurin) Type
Dark color with white edge.
Konjorin Type
Pine corn with black edge.
Matsuba Type
Pine corn with white edge.
Magoi (Kokurin) Type
Darker color with bold black edge.
Darker circle color in center.
Edged Type
Darker color edge.
Betagin Ginrin
Less sparkling (origin from Niigata).
Diagin Ginrin
Diamond scale (origin from Hiroshima).
Pearl Ginrin
Silver beans center of scale.

By Blogger KoiLover


Hand Feeding Koi Instructions


Steps to Hand Feeding Koi

Choose the right Koi
Some Koi tolerate human presence more than others and some Koi are not shy about coming close. Koi are very sociable fish that live in harmony with humans that are very happy to get close, and will often take food from a human hand.
Select the feeding place
Whether it is going to be your own pond, your aquarium tank or even a local park, it is important to choose one place that you will always treat as your “feeding spot”. The feeding spot should be free of sudden noises (such as splashing water), sudden movements (such as other humans walking by) and too much light/shade contrast.
Start slowly
At first, just throw the fish food into the water and observe the Koi as they eat. Make your presence obvious (that is, don’t move away). The first Koi to eat will be those that are bravest. Their determination to eat will encourage the less courageous to come along later. You may need to repeat this process of the Koi just getting used to your presence several times.
Move your hand closer to the Koi as they feed
After a few tries with you standing close to the Koi, start to stretch out your hand towards them. Leave it hovering above them for a short time as they feed, so that they can see it.
Try food in your hand once you feel certain that the Koi are used to your presence and your hand
One way to observe their familiarity with you is when you see the Koi getting excited by your presence, as they have come to associate your being around with receiving food. Do this at the same time as your other attempts at getting the Koi used to you, with the same food and in the same place as before.
Set your hand into the water, and doesn’t make fast movements or the Koi won’t take the food
Release some of the food into the water and leave your hand outstretched with some food still in it. Wait for the boldest Koi to come close. Again, this may take several attempts before the Koi feel comfortable enough to share from your hand.
Continue the feeding by hand regularly
If you want to continue feeding your Koi by hand, practice it regularly so that they remain friendly towards you and are not scared by your hand. It remains important to keep a regular method so that the Koi are not spooked; this is less a problem once koi are trained but might be a problem with smaller, more delicate Koi.

By Blogger KoiLover

Water Temperature for Koi

Water Temperature Range for Koi

Koi live in
46F – 95F / 7.7C – 35C
Koi active
68F – 77F / 20C – 25C
Certainly drop 5 Degrees
Resist illness or caught a cold (whitish membrane on body)
Less than 46F / 7.7C
Stop eating and activity slows
Barely alive
36F – 37F / 2.2C – 2.7C (start dying from frozen gills)
Start swimming again
54F – 55F / 12.2C – 12.7C
Check Koi health
54F – 55F / 12.2C – 12.7C
Above 86F / 30C
Slow down and poor appetites

By Blogger KoiLover

Nishikigoi Breeders & Specialization

Koi Breeders & Specialization in Japan

Specialize in Goshike, Beni Kikokuryu, and Kin Kikokuryu. Other varieties include Doitsu Hariwake, Doitsu Goshike, Doitsu Sanke, Doitsu Yamato Nishiki, Kujaku, and Kawarimono.
Specialize in high quality Gosanke. Well known in Japan Koi Shows.
Information Coming Soon!
Genjiro Koi Farm
Specialize in Kohaku and Sanke. Other varieties include quality Hikarimono, Kujaku, and Matsuba.
Information Coming Soon!
Hiranishi Koi Farm
Specialize in Kin Showa.
Hirashin Koi Farm
Specialize in Kohaku and Sanke. Hiranishi Koi has won high-rank prizes at the All Japan Koi Show.
Hirashin Koi Farm (Zengoro)
Specialize in Hi Utsuri. Other varieties include Showa, Goshike, Ginrin, Hikarimono and Utsurimono.
Hiroi Koi Farm (Conias)
Specialize in Goshike and Kigoi. Other varieties include Nice Showa and Ginrin Showa.
Hiroi Koi Farm (Tokube)
Specialize in Heisei Nishiki (Doitsu Yamato Nishiki). Other varieties include Kawarimono (unique Koi).
Hiroi Koi Farm (Yozaemon)
Specialize in Ginrin Goshiki and Doitsu Ochiba Shigure. Other varieties include Kohaku, Sanke, Showa, Goshike and others.
Hiroi Nobuaki (Choguro)
Specialize in Platina. Other variety include Beni Kikukuryu.
Hiroki Koi Farm (Hiroi Masaki)
Specialize in Doitsu Kujaku and Shiro Utsuri. Other varieties include good mixed tosai of Gosanke.
Specialize in Kohaku. Hoshikin Koi has won so many top awards including Grand champions.
Hoshiyone Koi Farm
Specialize in Gin Matsuba. Other varieties includ Kohaku, Sanke, Ginrin Showa, Kujaku, Kikokuryu, and others.
Specialize in Asagi and Goshike. Other varieties include 10 other varieties.
Igarashi Koi Farm (Seiki)
Specialize and famous in Kin Kikokuryu. Other varieties include various Koi.
Igarashi Koi Farm (Sen-Nin)
Specialize Sanke, Kohaku, and Showa. Igarashi Koi won Grand Champion at All Niigata Koi Show in Nogyosai.
Ikarashi (Ozumi)
Information Coming Soon!
Ikarashi Kazuto
Specialize in high quality Sanke.
Isa (Isa Hajime)
Specialize in Gosanke. Well known for Showa.
Specialize in Ginrin Asagi. Other varieties include Kin Kikokuryu and Kikokuryu.
Specialize in Jumbo Ogon. Well known for beautiful Fukurin Ogon, and his Koi won Grand Champion at All Niigata Koi Show in Nogyosai.
Jimbei Koi Farm
Specialize in high quality Sanke. Well known for Sanke.
Specialize in high quality Kujaku, Koromo and Shiro Utsuri.
Specialize in Goshike. Other varieties include Sanke and Showa from Momotaro and Dainichi Bloodline.
Specialize in high quality Koi. Well known in mix tosai.
Kansuke Koi Farm
Specialize in high quality Jumbo Kohaku. Kansuke Kohaku won Grand Champion at All Japan Koi Show.
Kawakami (Kawakami Kasujuki)
Produces many quality varieties Koi.
Information Coming Soon!
Koshiji Koi Farm
Specialize in unusual and very beautiful Koi. Other varieties include Doitsu Kin Showa, Heisei Nishiki, Yamato Nishiki, Kikokuryu, Kikusui, Shiro Utsuri, and Kumonryu.
Marusei Koi Farm (Hirasawa)
Largest breeder in Niigata specialize in Chagoi. Other varieties include large and jumbo sizes of all varieties.
Specialize in high quality Aka Matsuba, Shusui and Kohaku. Other variety include nice Kin showa.
Maruboshi Koi Farm
Specialize in high quality Kohaku. Maruboshi Koi won many top awards in recent Koi shows.
Marudo Koi Farm (Hisashi Hirasawa)
Specialize in high quality Kohaku, Sanke, Showa, and Asagi. Other varieties include nice Ogon.
Information Coming Soon!
Specialize in Ginrin/chagoi, Ginrin/Soragoi, Doitsu/Mukashi, Doitsu/Kogani Ochiba, Ginrin/Kohaku. Other varieties include many varieties.
Maruju Shigeyoshi
Specialize in Tancho Goshike, Tancho Kohaku, and Ginrin Tancho Kohaku. Other varieties include high quality Koromo, Showa, Kumonryu, Ginrin Kohaku, and some Sanke.
Marumago Koi Farm
Specialize and famous in Showa and Sanke. Marumago Koi won many prizes at Koi shows.
Marusaka (Tiruo)
Specialize in Sanke of Jinbei bloodline and Hikarimono. Other varieties include doitsu Midorigoi, a very nice mix Hikarimono, and many varieties.
Marushu (Abe San)
Specialize in Goshike. Other varieties include high quality Kohaku from SFF bloodline, Sanke, Kikokuryu, Koromo and Showa.
Produces many varieties include Wagoi, Ginrin, and Doitsu Gosanke, Shiro Utsuri, Ginrin Shiro Utsuri, Hikarimono, Kawarimono, and Platina.
Produces many champion Koi and specialize in Kujaku and Kinki Utsuri. Other varieties include high quality mixed tosai, high quality 3 years and older Koi.
Specialize in Kujaku, Sanke, Tancho, and Kohaku. Other varieties include nice mix tosai and mix nissai Koi.
Information Coming Soon!
Otsuka Koi Farm (Yoshikazu Otsuka)
Specialize in Asagi, Ochiba, Goshike, and Kigoi. Other varieties include nice mix tosai Koi and many other varieties.
Oya Yosyokujo (Kataoka)
Specialize in high quality Gosanke. Other varieties include nice Yamato Nishiki and Kikokuryu.
Sakai Matsunosuke
Specialize in Superb growth Kohaku and Sanke effected by Magoi bloodline. The Matsunoske Sanke bloodline is world famous for intense pigmentation of red and black.
Specialize in Koromo. Other varieties include very nice Yamabuki, Doitsu Yambuki, and Hikari Moyo.
Satoshi Tanaka
Produces Benigoi, Ginrin/Doitsu/Showa, Bekko, Ginrin/Asagi and many other varieties.
Specialize in high quality Showa.
Shinoda (Susumu)
Specialize in Doitsu Kohaku, Sanke and Showa.
Information Coming Soon!
Specialize in high quality Ginrin Yamabuki. Suda Koi has won many awards at the All Japan Koi Show.
Suzuki (Suzuki Junedaira)
Specialize in Showa and Hi Showa.
Specialize in Showa. Other varieties include many other varieties.
Tanaka Marusho
Information Coming Soon!
Takano Koi Farm
Specialize in Koromo, Goshike, and Ginrin Goshike.
Specialize in Ginrin Kohaku. He mainly breeds with Dainichi and Tomoin (Hoshikin) bloodline.
Information Coming Soon!
Information Coming Soon!
Information Coming Soon!
Yamazaki (Yamazaki Seichi)
Specialize in Doitsu Hariwake, Yamabuki and Platina.

By Blogger KoiLover

Feeding Koi Recommendation

Steps to Feed Koi

Take the temperature of the water your Koi is living in
Because Koi only eat certain foods in certain temperature.
If the water is under 70 degrees Fahrenheit, feed it once per day or every other day
When the temp lowers to 63 Fahrenheit or lower, feed it every other day. Another option is to feed it a cereal-based diet because cereal breaks down quickly.
In warm water
Koi under 8 inches in length should eat around 5 percent of their own body weight, while Koi over eight inches in length should only eat around two percent of their own body weight.
Provide the nutrition your Koi need
A healthy Koi often have brighter colors than a malnourished one. While your koi can’t just live on live food alone, your koi should enjoy the treats now and then. There are earthworms, which is the favorite of koi, prawns or cockles.
Use koi food in pellet form for their main diet
While Koi eat everything you gave them, most aren’t nutritional and can harm them.

Koi Feeding Guide

Less than 50F or 10C
Do not feed.
50F – 55F or 10C – 12.7C
2 – 3 times per week.
55F – 59F or 12.7C – 15C
4 – 5 times per week.
59F or 15C
6 times per week.
60F – 65F or 15.5C – 18.3C
1 time a day for everyday.
65F – 72F or 18.3C – 22.2C
1 – 2 times a day for everyday.
72F – 80F or 22.2C – 26.6C
3 – 4 times a day for everyday.

By Blogger KoiLover