Hideyoshi Medaka
Hideyoshi is a hikari-type medaka with a vivid golden body. It was developed by Yukio Oba in 2001 by fixing the pale gold form from golden medaka that first appeared in brown medaka. Its fixation rate is said to exceed 99%, so its look is considered stable from one generation to the next. Seen from above, the back catches the light and the gold glows even brighter. Like most medaka, it has a calm temperament, and it is a small fish. Its care difficulty is rated beginner-friendly, which makes it a good pick both for first-time medaka keepers and for anyone who wants to raise a golden variety.
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Hideyoshi 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
- The shining back and golden colour are clearest from above.
- Breeding
- Fixation exceeds 99% and it breeds readily; choose bright gold breeders, since imbalance drifts toward brown or amber.
- 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 Hideyoshi Medaka
Hideyoshi medaka is a hikari-type variety with a vivid golden body, developed by Yukio Oba in 2001. It is a small medaka and care is beginner-friendly. Learn its features and key care tips.
7 things to know before welcoming a Hideyoshi Medaka
1Enjoy the gold from above
Because Hideyoshi is a hikari-type medaka, its back reflects light and glitters gold. Keeping it in a wide container or bowl that you can look down into shows off that shine best. The bottom color and the lighting also change how it looks, so try a few placements.
2Easy for beginners
Hideyoshi is rated as beginner-friendly. The basics are dechlorinated water, a bright spot without too much direct sun, and modest feeding. Special equipment is not essential, but keep an eye on how quickly the water gets dirty.
3Size and container
Adults are small. They still need room to swim, so choose a container that is generous for the number of fish and avoid overcrowding. A larger volume of water also tends to keep water quality steadier.
4Tankmates and crossing
Its temperament is calm, like most medaka, and it tends to get along with medaka of a similar size. Eggs and tiny fry can be eaten, so moving them to a separate container is safer. Breeding with other varieties can dilute its traits, so keep Hideyoshi on its own if you want to preserve the line.
5Fixation and individuals
Hideyoshi is said to have a fixation rate above 99%, so its features are quite stable. Even so, color depth and shine can vary between individuals, so check the photos and descriptions on each listing. If anything is unclear, you can ask the breeder through a message.
6Lifespan varies
Reliable data on Hideyoshi's lifespan is limited, so it is hard to give a typical number of years. It also varies with the individual and the environment, which makes daily observation important. If feeding or swimming looks different from usual, check the water quality and temperature, and consider watching the fish in a separate container.
7Acclimating on arrival
When your fish arrives, float the bag in the tank water to match temperature, then add tank water little by little so it can adjust to the water quality. A sudden change of environment can stress fish, so feed lightly and keep things quiet for the first few days. It also helps to have dechlorinated water ready in the new container beforehand.
Frequently asked questions about Hideyoshi Medaka
- Q.What kind of medaka is Hideyoshi?
- A.It is a hikari-type variety with a vivid golden body. It was developed by Yukio Oba in 2001 by fixing the pale gold form from golden medaka that appeared in brown medaka.
- Q.Can beginners keep Hideyoshi?
- A.Yes, its care difficulty is rated beginner-friendly. If you stick to the basics, such as using dechlorinated water and avoiding sudden temperature changes, it is easy to get started.
- Q.How large does Hideyoshi grow?
- A.There is little data on the adult size of this variety, and individuals vary. It is a small medaka.
- Q.How long does Hideyoshi live?
- A.Reliable data on Hideyoshi's lifespan is limited, so we cannot give a clear number of years. It varies with the individual and the environment, so keep up good water management and watch your fish daily.
- Q.Can I keep it with other medaka varieties?
- A.Its temperament is calm, so sharing a container is possible, but breeding alongside other varieties can mix their traits. If you want to maintain the Hideyoshi line, it is best to keep and breed Hideyoshi on their own.
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