Term

Description

acre

unit of land area. outdated but for millions of die-hard Imperialists.

1 acre = 4046.9 m2.

1 hectare = 2.4711 acres

aerator

device to oxygenate water in aquaculture and koi ponds. Types: air stones, paddles wheel, cone, etc

Aeromonas spp

Opportunistic bacteria responsible for internal and external infections in fish. Eg Aeromonas hydrophila, Aeromonas salmonicida. Motile form of Aeromonads and Pseudomonads considered main cause of disease 'infectious dropsy of carp' (IDC)

ago-hi

The hi markings on the cheeks of Asagi and Shusui

agriflavine neutral

Antiseptic dye used for wounds ulcers, ectoparasites, bacteria, fungicide, disinfection of eggs, The preferred form of agriflavine Composition: 3,6-diamino-10-methylacridinum chloride and 3,6-diaminoacridine. Synonyms: Trypaflavine

ai

Blue (indigo) colour.

Ai-goromo

Koi with blue-robed scales on a hi pattern.

ai-sashi

Indigo sashi of Ai-goromo. add

Ai-Showa

Alternative name for Koromo-Showa

aka

Red (ground)

Aka-Bekko

Bekko with a red ground

Akabo

Kohaku with red all-over. Japanese for “red trash” which is culled out during first culling. Same as Akamuji or “red thing”

Aka-Hajiro

Kohaku with a red body and white tips to the pectoral fins. Grouped with Kawarimono for judging

Aka-Matsuba

Koi with Matsuba scalation on a ground of red.

akami

Eye with a red iris as in Akame Kigoi

Akamuji

Red or orange koi, with the colour covering the entire body and all fins. Not favored and removed during culling. A subvariety of the Kohaku

Aka-Sanke

Sanke with a red body and sumi markings but a white nose and abdomen

AKCA

Associates Koi Clubs of America

akebi

light blue

akemi

Light blue

algae

simple chlorophyll containing water based plant life. Valuable food source for fry. Common types:

alkalinity

The concentration of bases that can neutralize acids) in a water sample

ammonia

Simple nitrogen containing compound, excreted by fish via their gills. Toxic to fish. NH₃, in water the ionized form NH₄⁺ is less toxic. The relative concentration of the two ionic species is determined by the pH

anchor worm

parasitic worm found on fish, hard chitin structure, Lernea spp

antibiotic sensitivity

test procedure to determine which antibiotic best to use for combating a specific bacterial infection

Aoki

Sawata Aoki, founder of the Ogon variety. Aoki started in 1921 program to produce Ogon by selective breeding of river carp with golden scales. Aoki’s first Ogons were recorded in 1946.

ara-doitsu

Doitsu Koi with only a scattering of doitsu scales.

aragoi

irregular and jumbled scales. As found on poor doitsu koi. related to yoroi

Asagi

Koi with a light and dark blue ground with red markings on the jaw and abdomen

Asagi-Magoi

Blue-black carp

Asagi-Sanke

Asagi with a pale blue back, red head and red flanks and a pure white lower abdomen.

Asagi-Suminagashi

Alternative name for Suminagashi

atozumi

Sumi that develops late and not shown on young Koi. Late black