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MARKER DATABASE
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Near Thurmont in Frederick County, Maryland — The American Northeast (Mid-Atlantic)
 

Koi

 
 
Koi Marker image. Click for full size.
Photographed by Devry Becker Jones (CC0), May 17, 2026
1. Koi Marker
Inscription.
Origin of Koi
The earliest written record of the species was found in Eastern Asia and China. Koi were introduced to Japan by the Chinese about 200 A.D.

Life Span
The average life span for koi is 25 to 35 years. Some have reportedly lived up to 200 years!

Varieties
Although variations of koi are limitless, breeders have identified and named specific categories. Koi with more than one color are unique because there are no two that look exactly alike.

Koi in the Wild
Koi have been accidentally and deliberately introduced into the wild on every continent except Antarctica. They greatly increase the turbidity of the water because they are constantly stirring up the bottom. This makes waterways unattractive, reduces the abundance of aquatic plants and can render the water unsuitable for swimming or drinking even by livestock.

[Captions:]
ドイツ Doitsu • べっ甲 Bekko • 浅黄 Asagi • 銀鱗紅白 Gin Rin Kohaku • 変わり物 Kawarimono • 光り物 Hikari • 五色 Goshiki • 紅白 Kohaku • 九紋竜 Kumonryu • 孔雀 Kujaku • 衣 Goromo • 銀松葉 Gin Matsuba • 三色 Sanke • オレンジ黄金 Orenji Ogon • プラチナ黄金 Platinum Ogon • 落葉 Ochiba • 丹頂 Tancho • 丹頂三色 Tancho Sanke • 昭和 Showa • 山吹黄金 Yamabuki Ogon • 写り Utsuri
 
Erected by Catoctin
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Wildlife Preserve.
 
Topics. This historical marker is listed in these topic lists: AnimalsAnthropology & ArchaeologyEnvironmentWaterways & Vessels. A significant historical year for this entry is 200 CE.
 
Location. 39° 35.49′ N, 77° 25.756′ W. Marker is near Thurmont, Maryland, in Frederick County. It can be reached from Catoctin Furnace Road 0.6 miles north of Kellys Store Road, on the right when traveling north. Touch for map. Marker is at or near this postal address: 13019B Catoctin Furnace Rd, Thurmont MD 21788, United States of America. Touch for directions.

Regionally, this marker is in the Washington Metropolitan Area and in Central Maryland. It is also in the American Mid-Atlantic. Globally, it is in North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once one of the original Thirteen Colonies and also the Antebellum South.

Other nearby markers. At least 8 other markers are within walking distance of this marker: Jaguar (within shouting distance of this marker); Sun Bear (about 400 feet away, measured in a direct line); Nigerian Dwarf and African Pygmy Goats
Koi Marker image. Click for full size.
Photographed by Devry Becker Jones (CC0), May 17, 2026
2. Koi Marker
(about 400 feet away); The North American Bison (about 500 feet away); Sacred Ibis (about 500 feet away); American Alligator (about 600 feet away); Lucky Bird's Aviary (about 600 feet away); Collared Peccary (about 600 feet away). Touch for a list and map of all markers in Thurmont.
 
Additional keywords. Ancient Japan; Ancient China
 
 
Credits. This page was last revised on May 17, 2026. It was originally submitted on May 17, 2026, by Devry Becker Jones of Washington, District of Columbia. This page has been viewed 10 times since then. Photos:   1, 2. submitted on May 17, 2026, by Devry Becker Jones of Washington, District of Columbia.
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Sep. 17, 2026