Seiga
Seiga is a premium ornamental medaka variety known for its body-glow (taigaiko) that spreads across the entire body, shimmering like scattered stars. A band of light reminiscent of the Milky Way flows across its skin, and this brilliance stands out most when viewed from above. Despite its striking appearance, Seiga has a calm temperament and gets along well with other medaka. It's considered suitable for intermediate keepers, as maintaining the beauty of its body glow calls for attention to water quality, diet, and lighting conditions. Adults typically reach 3-4cm and live around 2-3 years. This variety rewards keepers who enjoy top-down viewing and want to watch its shimmer develop over time.
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- Variety Name
- Lineage
- Actual Photos
- Color Classification
- Body Type
- Scale Type
- Size
- Origin
- Age/Generation
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Seiga key facts
- Care level
- Intermediate
- Lifespan
- 2-3 years
- Size
- 3-4cm
- Temperature
- 5〜30℃
- Diet
- Medaka pellets, daphnia
- Container
- Black top-viewing container shows external light most beautifully
- Sunlight
- Sunlight makes external light shine like stars
- Water Temperature & Quality
- Tolerates 5-30°C with 20-28°C ideal. Adapts to neutral to slightly alkaline water and is easy to keep.
- Diet & Feeding
- Feed medaka pellets as the staple plus live foods such as daphnia. Leftovers foul the water, so feed small amounts.
- Breeding & Egg-laying
- Select by the width and density of the body light; pairing fish with wide body light maintains a strongly glowing line.
- Notes
- Fry management affects adult external light quality
About Seiga
Seiga is a premium medaka variety with star-like body glow, best viewed from above for its Milky Way-like shimmer. Suited to intermediate keepers.
7 things to know before welcoming a Seiga
1Glow shines brightest from above
Because Seiga's body glow spreads across the entire body, its beauty stands out most when viewed from above rather than from the side. In addition to typical side-view tanks, keeping them in a shallow container for top-down viewing helps bring out their full appeal.
2Suited to intermediate keepers
Seiga is considered suitable for intermediate keepers. Beyond basic water quality management and daily observation, bringing out a clean, vivid body glow calls for a bit more experience with environmental care. First-time medaka keepers may want to get comfortable with a standard variety before taking on Seiga.
3Calm temperament, good for mixed tanks
Like other medaka, Seiga has a calm temperament and does well both on its own and in a mixed tank with similarly sized medaka. That said, keeping a tank grouped by similar glow lineages tends to show off the body glow's beauty even more.
4Adults reach about 3-4cm
Seiga reaches an adult size of roughly 3-4cm, in line with typical medaka. When choosing a container, plan for this full-grown size and provide enough space to avoid overcrowding.
5Lifespan is around 2-3 years
Seiga's lifespan is generally around 2-3 years. Since this means a long-term commitment, it's worth confirming before bringing one home that you can keep up with ongoing care like regular water changes and feeding.
6Maintaining the body glow
The brilliance of the body glow is said to be sensitive to daily water quality and lighting conditions. Keeping the tank environment stable and avoiding sudden changes in water quality helps preserve Seiga's natural beauty over the long term.
7Not subject to CITES
Seiga is not subject to CITES. There's no need to worry about special regulatory procedures when bringing one home.
Frequently asked questions about Seiga
- Q.What does Seiga look like?
- A.Seiga is a premium variety with body glow spreading across its entire body, with a band of light reminiscent of the Milky Way flowing across its skin. Its star-like shimmer is most striking when viewed from above.
- Q.Can beginners keep Seiga?
- A.Seiga is considered suited to intermediate keepers. Beyond basic water changes and feeding, keeping the body glow looking its best calls for a bit more experience with environmental management, so it's recommended for those already comfortable with medaka care.
- Q.How big does Seiga grow?
- A.Seiga grows to about 3-4cm as an adult, which is in line with typical medaka sizes, making it easy to add to an existing medaka tank.
- Q.How long do Seiga live?
- A.Their lifespan is generally around 2-3 years. Keeping up with regular water quality management helps you enjoy their shimmer for as long as possible.
- Q.Do I need a permit to keep Seiga?
- A.Seiga is not subject to CITES, so there's no need to worry about special procedures when bringing one home.
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Care difficulty, lifespan, size and diet — all basics covered.
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