Thursday, September 30, 2010

Hand Feeding Koi Fish at Changi Airport

In this video clip we have a bunch of Kohaku Koi fish eating out of a traveler's hand. Hope the Koi don't bite too hard!

Koi Eats a Cheerio


Koi Fish Highlight Day 130

Youtube user katinatreesee is on a mission to record every day for one year. That makes 365 days in total. On day 130 she visited a Koi pond at the Chuang Yen Monastery in Carmel, NY. Check out the video to see what she thought of it.

Monday, September 27, 2010

A giant Koi Pond

In this video clip, jumbo Koi fish swim around in a giant pond. The sun hits them just right and makes their color explode.

Friday, September 24, 2010

Californian has bear "taken care of"

A Californian Koi pond enthusiast had a bear problem. It found her pond and ate most of her Koi. She contacted the local DNR and they told her to remove them from the pond. The bear kept returning to her property, so DNR issued a depredation permit and a trapper came and caught the bear.

The controversy involves the way the bear was euthanized. A local resident who was going to a relative's house passed by a truck and a trailer noticed that a bear was in it. He heard a gunshot, and a little while later the truck and trailer passed him. When the local resident investigated the area that the truck was parked on, he discovered a bear carcass that was missing a paw and the head. He contacted the local authorities who discovered that it was the trapper that the DNR hired who quite literally executed and then mutilated the bear.

Source: Mountain News

What's next for Koi pond predators? Concrete shoes? Could Jimmy Hoffa be underneath a Koi pond somewhere?

Pic Unrelated:

American Black Bear
Source: U.S. Fish and Wildlife Service

Thursday, September 23, 2010

KHV Outbreak in Boise, Idaho Park Ponds

Several ponds in a park near the Boise Depot have an outbreak of KHV (Koi Herpes Virus.)  Authorities believe it happened when someone dumping their fish in the ponds.  Almost 100 Koi in the ponds have died already, the rest are to be mechanized to prevent the spread of the virus in the area.  Cleanup of the ponds is estimated to cost the city up to $10,000.00.  Read more about it here.

Monday, September 20, 2010

Auctioneer wants to make a killing selling three Koi

An auctioneer in the UK hopes to sell three Koi for $16,000.  The trio of Koi belonged to a Koi enthusiast from Surrey who left his fish to his children.  They are part of an estate sale.  With no prior experience in the hobby or with selling Koi, this sounds like a fish tale.  Read more on it here.

String Algae Problems?

If you are having a trouble with string algae taking over your pond, chances are that you have a layer of gravel covering the bottom.

Why ponds with rock at the bottom don't work

Imagine you take a dog and place it in a room with six inches of gravel for a floor.  Now you keep feeding the dog while letting its waste settle in the rock.  You keep feeding it and feeding it, and eventually, it's going the waste is going build up and turn the room toxic.

A pond with rock at the bottom is very similar to that situation.

Waste gets trapped between the small spaces between the rock.  Anaerobic bacteria break the waste down  and turn it into Nitrate (plant fertilizer.)  The string algae uses the Nitrate in the water as a catalyst to spur its growth.  A by product of the anaerobic bacteria breaking down the waste is Hydrogen Sulfide.  Pockets of Hydrogen Sulfide will build up in the mulm at the bottom of the pond.  When the pond is cleaned out, the pockets for gas escape and poison the fish (it's the rotten egg smell.)

In a natural aquatic setting, for example: a river, a stream or a lake, thousands to millions of gallons of water are replaced each day.  There is enough water flowing through a a natural ecosystem to keep the level of waste at an absolute minimum while supporting aquatics life.  A small pond in a backyard with a rubber liner and rock covering the bottom is not a natural aquatic setting.  In a lake, there is tens of thousands of gallons of water per fish.  In a backyard pond, there usually only a hundred gallons of water per fish.

How to get rid of string algae

Remove the rock at the bottom of the pond and install a bottom drain along with a filter system.  Waste will get sucked into the bottom drain and captured by the filter.  If fish waste and other organic debris is removed from the pond, the string algae will have nothing to fertilize its growth.

Filter System Components

A complete filter system will include mechanical, biological and UV components.  Mechanical filters will remove the solid waste from the water, biological filters will handle the Ammonia that fish produce and UV sterilizers will eliminate the free floating algae that cause green water.  They work together to keep pond maintenance at an absolute minimum.

A poorly designed pond will require you to muck it out on a regular basis.  This is not water gardening, it is pond garbage removal.

Sunday, September 19, 2010

Underwater Pond Camera

Check out all the shubunkins and goldfish swimming around in the pond. It is a little green, maybe some algae eaters will help it out.

Thursday, September 16, 2010

The Meaning of Koi Fish

Koi is the Japanese word for carp. Hobbyists in the Americas and Europe use the single word “Koi” when referring the to fish, while the Japanese call the fish Nishikigoi. It means “brocaded carp” and they use that term to differentiate between the regular carp they consume and the ornamental carp that are kept in pets. People that are not to familiar with them call them “Koi fish” (it’s similar to the word for the friendly orange fish, goldfish.)

It is believed that the Chinese brought the carp with them to Japan and with them, the knowledge of how to raise them in ponds for food. These plain carp sometimes had spots of yellow or red color. In the early 1800’s, the farmers in Niigata took note of this. They kept a few of the “special” colored carp and selectively bred them to bring out the color. Within a couple decades, the first bloodlines were established for the original varieties. Koi fish now come in a wide selection of colors, finishes, fin styles (butterfly long fin and regular) and scale variations (regular, scaless, or large scales along the dorsal fin and lateral line).

Some Koi fish colors are:

  • red
  • white
  • black
  • blue
  • yellow
  • green
  • purple
  • grey
  • brown
Some color finishes include:
  • flat
  • metallic
  • gin rin (pron. geen leen,) which is a pearlescent sheen that is on all the scales

Keeping Koi

Koi fish are considered an ornamental fish variety and are produced only for decorative value in outdoor ponds and water gardens. Keeping Koi has become exceedingly popular in the recent years, with the advent of overnight international shipping and compact filtration systems that purify pond water.

In the optimal environment, one that is low stress and properly filtered, Koi can live 20 to 30 years. They can also grow up to 3 feet if they have the rare “jumbo” genetics (do a search for “jumbo Koi” to see some for yourself). Koi are a schooling fish, and do best when there is a group of them in the pond. Overcrowding is an issue, as a rule of thumb there should only be one fish for every couple hundred gallons of water in the pond.

Koi are a hardy fish, they can live in a wide variety of conditions. Although they do thrive when the water is around 70 degrees Fahrenheit, the pH level is a neutral 7 and there if there is no Ammonia in the water (koi pond filters strip the Ammonia the fish produce from the water.)

Koi fish add interactivity to any plain water feature. Each fish has its own personality, some will even follow you if you are near the pond (they are usually looking for food.)

Wednesday, September 15, 2010

Coy Fish

Coy fish is actually a misspelling of “koi fish”.  Koi are a colored carp that people keep in ponds as pets.

During the last few decades, the hobby of keeping Koi fish in ponds has seen massive growth around the world. In Japan, the Koi fish symbolizes love and affection. No one can ignore the mesmerizing effect of a school of multi-colored fish swimming around the pond.

Japanese Koi come in various colors and sizes.  Watching them together, gracefully moving around the water, has a relaxing and hypnotic effect that makes you want to watch them for hours at a time. Along with vibrantly colorful Koi, there is a black type called Magoi that moves beneath the colorful school of Koi like a shadow, hence the nickname “Shadow of the Rainbow.”

Studies have shown that watching a vibrant school of Koi swimming in the water is of therapeutic in nature and imparts a calming effect on your mind. Watching the fish swim around the pond helps to reduce stress and gives an overall feeling of contentment and serenity.

Koi fish, not Coy fish

Keeping Koi is not only a pleasurable hobby, but it can also help you to relax and de-stress after a long hectic day.

Saturday, September 11, 2010

Koi Club Listings

How many Koi clubs can you find in the US?

Friday, September 10, 2010

Missing Koi Carp

I had a ghost Koi, I went on holiday my friend was feeding it, it was really big and about 7 years old, when I got home the pond lily had taken over the pond the fish was still alive but due to bad weather I did not get round to cutting it back for a week I haven't seen the fish for a few days now it is not coming up for food do you think it is dead, i cannot see the bottom of the pond. The pump was running slow also but I have cleaned that. -Wilma

It sounds like you had a predator visit your pond.  You can try to keep it from taking more Koi by covering the pond with netting.

Thursday, September 9, 2010

Giant Koi Carp Caught Near France

A man named Raphael Biagini caught a giant Koi carp in a lake in southern France. Luckily for the koi fish, he released it. Read more about it here.

Giant Koi picture unrelated:

Wednesday, September 8, 2010

Koi van almost flips over

The Koi van was going backwards downhill when it slipped in the mud and almost flipped over.

Thursday, September 2, 2010

Koi Fish Varieties

Many people keep koi fish in ponds or tanks, but only some can easily identify the types of Koi that are swimming around in them. In this video, we show 38 different types of Koi, including some rare varieties. Use this video to help you learn how to identify Koi when you see them.