Medaka Encyclopedia — 87 Species Directory
Encyclopedia of popular medaka varieties with traits, care guides, and pricing.
Featured Medaka
Showing 46 of 87 species(1–24)

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

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

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

Beniazami Medaka
Oryzias latipes var.
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.

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

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

Boukyaku no Tsubasa Medaka
Oryzias latipes
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.

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

Daruma Medaka (Improved)
Oryzias latipes var.
Improved medaka with short, round daruma body type. Adorable plump form has high ornamental value. Warm water is essential for maintaining body shape.

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

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

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

Ginga Medaka
Oryzias latipes var.
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.

Hakuto Medaka
Oryzias latipes var.
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.

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

Hisui (Jade) Medaka
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.

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

Ikazuchi Medaka
Oryzias latipes var.
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.

Kabuki Medaka
Oryzias latipes
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.

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

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

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

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

Kuro Lame Miyuki Medaka
Oryzias latipes var.
Black body with Miyuki external light and blue lame. Jet-black body with glittering blue lame creates a mystical night-sky appearance.
Related Content
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.