Ginsen Medaka
Ginsen Medaka is a medaka variety that combines the Hikari body type of Ao-Miyuki with long fins and an all-around glow. Its signature look is a sheen that seems to wrap around the whole body, set off by elegant, trailing fins. It is said to have been created by Koji Baba. Rated as beginner-friendly, it is a small medaka, so it suits compact tanks and outdoor bowls alike. Because the fins are long, a little care with water flow and tank mates helps keep its graceful swimming on display.
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- Body Type
- Scale Type
- Size
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Ginsen Medaka key facts
- Care level
- Beginner-friendly
- Lifespan
- Few reliable data
- Size
- About 3-4 cm (wild medaka reach up to 4 cm SL: FishBase)
- Diet
- Omnivore (floating prepared foods, live foods such as daphnia)
- Container & Tank
- All-round and back shine show well from above; avoid sharp décor that could damage the long fins.
- Breeding
- Hikari long-fins are prone to spinal deformities; choose straight-backed breeders with full all-round shine.
- Tank Mates & Compatibility
- Peaceful and fine with other medaka of similar size. To keep the variety's traits, do not let it breed with other varieties in the same container.
- Diet & Feeding
- Give floating food that is eaten within 3-5 minutes: at least twice a day in summer, once a day in spring and autumn, and little or none outdoors in winter.
- Cautions
- Never release ornamental medaka into rivers, ponds or paddies; hybridisation causes genetic pollution of wild medaka.
About Ginsen Medaka
Ginsen Medaka pairs the Hikari body type of Ao-Miyuki with long fins and an all-around glow. A small, beginner-friendly medaka. Learn its traits, care basics and what to know before bringing one home.
7 things to know before welcoming a Ginsen Medaka
1The all-around glow
The main appeal of Ginsen is the sheen that seems to wrap around the entire body. It also carries the Hikari body type of Ao-Miyuki, which is part of what defines this variety. How the glow looks can change with the individual fish and the lighting, so it helps to check the listing photos and videos beforehand.
2Caring for long fins
Long fins can get damaged by strong currents or by snagging on sharp decorations. Softening the filter outflow and choosing soft-leaved plants are simple ways to protect them. The condition of the fins is also a handy indicator when you check on your fish each day.
3Beginner-friendly care
Ginsen is considered a beginner-friendly variety. Use dechlorinated water, and change it in small amounts rather than replacing too much at once. Feed only what the fish can finish and remove any leftovers.
4Small size, tank choice
Adults are small, so a compact tank or an outdoor bowl can work. Small volumes of water change quality more quickly, though, so a container with some room to spare makes upkeep easier.
5Choosing tank mates
Medaka are generally peaceful, so keeping them with other medaka is the safest approach. Avoid fin-nippers and active fish that chase others, since they can damage the long fins. Keep the number of fish reasonable for the size of the container.
6Acclimating on arrival
When your fish arrives, float the bag in the container to match the temperature, then mix in small amounts of your tank water gradually. For the first few days, feed lightly and watch how it swims and how its fins and body look. If anything seems off, consider asking the breeder you bought from.
7Lifespan and long-term care
There is little reliable information on the lifespan of Ginsen, so we cannot give a definite number of years. Avoiding sudden changes in water quality and temperature, and observing your fish daily, is the basis of keeping them for a long time.
Frequently asked questions about Ginsen Medaka
- Q.Can beginners keep Ginsen Medaka?
- A.Yes, it is considered beginner-friendly. Because the fins are long, avoid strong currents and sharp decorations, and change the water in small, careful amounts.
- Q.How large does Ginsen Medaka get?
- A.There is little data on the adult size of this variety, and individuals vary. It is a small medaka. A compact tank or outdoor bowl can work, but a container with some extra room helps keep water quality stable.
- Q.What kind of medaka is Ginsen?
- A.It is a variety that combines the Hikari body type of Ao-Miyuki with long fins and an all-around glow. Its sheen wraps around the body and its fins are long, and it is said to have been created by Koji Baba.
- Q.Can I keep it with other fish?
- A.Keeping it with other peaceful medaka is the basic approach. Avoid fin-nippers and fish that chase others, as they can damage the long fins.
- Q.How long does Ginsen Medaka live?
- A.There is little reliable information on its lifespan, so we cannot give a definite figure. Stable water quality and daily observation are the foundation for enjoying your fish for a long time.
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