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Medaka Encyclopedia — 87 Species Directory

Encyclopedia of popular medaka varieties with traits, care guides, and pricing.

Featured Medaka

Showing 46 of 87 species(124)

Albino Medaka

Albino Medaka

Intermediate

Albino individuals lacking melanin pigment. Characterized by red eyes and white body with a mystical atmosphere.

AlbinoRed eyesMystical
Angel Medaka

Angel Medaka

Intermediate

A pure white medaka with elongated fins like angel wings. Swallow-fin type white medaka.

AngelWhiteSwallow
Aurora Medaka

Aurora Medaka

Intermediate

A fantastic medaka with semi-transparent scales and rainbow sheen. Aurora effect changes colors with light.

AuroraRainbowSemi-transparent
Beniazami Medaka

Beniazami Medaka

Oryzias latipes var.

Intermediate

Improved medaka characterized by deep red color. Beautiful vivid crimson body color reminiscent of azami (thistle) flowers. Among red medaka, this variety is prized for its especially deep coloration.

Modified medakaRedCrimson
Black Diamond Medaka

Black Diamond Medaka

Intermediate

Black body studded with lame scales like stars in the night sky. Orochi lineage crossed with lame scales.

Lame scalesNight skyOrochi lineage
Black Lame Medaka

Black Lame Medaka

Intermediate

A mystical medaka with glittering lame on a black body, like stars in the night sky.

MedakaBlackLame
Boukyaku no Tsubasa Medaka

Boukyaku no Tsubasa Medaka

Oryzias latipes

Intermediate

A long-finned medaka whose black-and-orange aurora body is densely set with glittering yellow lamé — a strain that unites long fins with lamé, traits usually hard to combine.

IntermediateLaméLong fin
Daruma Medaka

Daruma Medaka

Intermediate

Short-bodied round medaka resembling a daruma doll. Rolling swimming motion is adorable. Requires warm water keeping.

Round bodyCuteWarm water
Daruma Medaka (Improved)

Daruma Medaka (Improved)

Oryzias latipes var.

Intermediate

Improved medaka with short, round daruma body type. Adorable plump form has high ornamental value. Warm water is essential for maintaining body shape.

Modified medakaDaruma bodyRound
Deep Blue Medaka

Deep Blue Medaka

Intermediate

An improved variety with deeper indigo than traditional blue medaka. Attractive deep blue color like the deep sea.

Deep BlueIndigoModified
Diamond Dust Medaka

Diamond Dust Medaka

Intermediate

A medaka with fine lame sprinkled like powdery snow all over. Beauty reminiscent of winter snowscape.

Diamond DustPowdery snowFine lame
Dragon Medaka

Dragon Medaka

Intermediate

A medaka with powerful scale shine reminiscent of a dragon. Iron mask type head gloss is particularly beautiful.

DragonIron maskExternal light
Ginga Medaka

Ginga Medaka

Oryzias latipes var.

Intermediate

Improved medaka with beautiful blue external body light. Named because the blue-white external light emanating from the back evokes a galaxy. Popular variety with fantastical beauty like a nighttime water surface.

Modified medakaBlueExternal light
Hakuto Medaka

Hakuto Medaka

Oryzias latipes var.

Intermediate

Improved medaka with white body color and red eyes (albino). Named for its cute appearance resembling a white rabbit. Impressive contrast between clear white body and red eyes.

Modified medakaWhite bodyAlbino
Hanabi (Fireworks) Medaka

Hanabi (Fireworks) Medaka

Intermediate

Multicolored glitter scattered across body radiates like fireworks. Lame changes to rainbow colors with light angle. Rapidly gaining popularity as a summer icon.

Modified medakaMulticolor lameGorgeous
Hisui (Jade) Medaka

Hisui (Jade) Medaka

Intermediate

Improved medaka with deep emerald green body reminiscent of jade. Green medaka are rare, with unique coloration popular among collectors. Color shifts with light angle.

Modified medakaGreenRare
Hyakushiki Medaka

Hyakushiki Medaka

Intermediate

Gorgeous golden body with shimmering lame scales. Named after the Hyaku Shiki from Gundam. Shines gold in top view.

GoldenLame scalesGorgeous
Ikazuchi Medaka

Ikazuchi Medaka

Oryzias latipes var.

Intermediate

Striking variety with jet-black body and yellow lame. Named for yellow flashes of lightning on black body. High ornamental value due to vivid contrast.

Modified medakaBlackYellow lame
Kabuki Medaka

Kabuki Medaka

Oryzias latipes

Intermediate

A medaka with a golden head and a black-based body carrying miyuki-derived body luster; the showy contrast is likened to a kabuki costume.

IntermediateBody lusterBlack body
Karasu Medaka

Karasu Medaka

Intermediate

Medaka variety with jet-black body. Darker than Black Diamond lineage, with fins also deeply black being most valued. Appreciated for understated beauty.

Modified medakaBlackUnderstated
Kouhaku Medaka

Kouhaku Medaka

Oryzias latipes var.

Intermediate

Red and white bicolor medaka like Kohaku koi. Each individual has unique markings. Color fixation is challenging, making selection deeply rewarding.

Modified medakaRed-whiteBicolor
Koutei Medaka

Koutei Medaka

Oryzias latipes var.

Intermediate

Improved Youkihi with deeper, more intense crimson. The name 'Koutei' reflects its regal red. Color deepens outdoors.

Modified medakaCrimsonColor enhancement
Kurenai (Crimson) Medaka

Kurenai (Crimson) Medaka

Intermediate

Superior variety with even deeper red than Youkihi. Transparent scales reveal internal organs, further emphasizing redness. Pursuing the ultimate in red coloration.

Modified medakaRedTransparent scale
Kuro Lame Miyuki Medaka

Kuro Lame Miyuki Medaka

Oryzias latipes var.

Intermediate

Black body with Miyuki external light and blue lame. Jet-black body with glittering blue lame creates a mystical night-sky appearance.

Modified medakaBlackLame

Medaka FAQ

How much do medaka cost?
Common varieties cost 100-500 yen each, popular Youkihi and lame types 500-3,000 yen, and rare new varieties can reach 5,000-30,000+ yen per pair.
Can beginners keep medaka?
Medaka are adapted to Japanese climate and can even be kept in outdoor biotopes. They're hardy, tolerant of temperature changes, and one of the easiest ornamental fish for beginners.
How long do medaka live?
In the wild they live 1-2 years, but in captivity they can live 2-4 years. Proper water management and feeding help them thrive longer.
What should I check when buying medaka?
Check that they're swimming actively, not too thin, and free of injuries or disease signs. Choose specimens that clearly display their variety's characteristics.
Is medaka breeding easy?
Medaka breed relatively easily, spawning from spring to autumn when water temperature is above 20°C with 12+ hours of daylight. Moving eggs to a separate container improves hatch rates.