Can beginners keep Amaterasu?

Its care difficulty is rated as beginner-friendly. If you avoid sudden changes in water quality and temperature and check the fish daily, it can be a good first medaka.

There is little data on the adult size of this variety, and individuals vary. It is a small medaka. Sizes vary between individuals, so it is safer to choose a container with some room to spare.

How long does it live?

Little reliable data exists on the lifespan of Amaterasu, so we cannot give a clear estimate. It will vary with the environment and the individual, so consistent daily care and observation matter most.

Can it live with other fish?

It is said to get along with peaceful, small fish, but avoid large or aggressive tankmates. After combining them, check that the medaka are not being chased and are still getting enough food.

Will its offspring look the same?

Offspring do not always inherit the parents' traits, and the depth of red and the glow can vary between individuals. If you plan to breed them, look closely at the parents' features and raise the fry in a separate container to make them easier to manage.

Amaterasu Medaka

Amaterasu Medaka is a red-and-white medaka with a body glow that runs along its scales. Its strong vermilion red and wide, clear scale glow are its hallmarks, and it has won the top award at a Japanese medaka competition. It is a small medaka, and the variety is considered beginner-friendly. Depending on the light and your viewing angle, the glow seems to travel across the red and white pattern, so it stands out even in a small container. Reliable data on lifespan is scarce, so plan to observe your fish closely and keep them for the long term.

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Amaterasu 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 scale shine and pattern are mostly enjoyed from above; sunny outdoor containers are said to bring out the red.
Breeding: The pattern and scale shine do not always inherit together, so siblings vary; choose breeders strong in both.
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.

TraitsMedakaKohakuBody shineScale shineShow winner

About Amaterasu Medaka

Amaterasu Medaka: a vermilion-and-white medaka with a wide, clear scale glow and a top award from a Japanese medaka competition. Small and beginner-friendly.

7 things to know before welcoming a Amaterasu Medaka

1Red, white and glow
Amaterasu pairs a red-and-white pattern with a body glow that runs along the scales. Its strong vermilion red and wide, clear scale glow are its main attractions. It is also a variety that has won the top award at a Japanese medaka competition.
2Check each fish
The depth of the red, the width and spread of the glow, and the red-white balance differ from fish to fish. Compare the photos and videos on each listing, and ask the breeder about anything unclear to reduce surprises after arrival. If you plan to breed them, keep in mind that offspring do not always inherit the parents' traits.
3Beginner-friendly care
Amaterasu is rated as beginner-friendly, which makes it a reasonable choice as a first medaka. Even so, watch out for unstable water right after setting up a tank and for sudden temperature changes. Start with a small number of fish and adjust the setup as you observe them.
4Size and container
As a small medaka, it can be kept in a compact container. Smaller volumes of water change in quality and temperature more quickly, so a roomier container is easier to manage. A wide, shallow container also suits viewing the fish from above.
5Light and backdrop
The scale glow looks different depending on the lighting and the angle you view it from. Watch the fish under bright light and choose a calm-colored backdrop and substrate, which tends to set off the red and the glow. Try different setups to find the look you like best.
6Temperament and tankmates
Medaka are generally peaceful and are said to get along with calm fish of similar size. Amaterasu is small, so avoid housing it with large or aggressive fish. If you have fry, keep them in a separate container, and provide hiding places such as aquatic plants.
7Acclimation and checks
After arrival, float the bag on the water to match temperatures, then add tank water little by little to acclimate the fish carefully. From then on, check their swimming, appetite, and the condition of their body surface and fins every day. If anything unusual continues, review the water condition and the rest of the setup.

Frequently asked questions about Amaterasu Medaka

Q.Can beginners keep Amaterasu?: A.Its care difficulty is rated as beginner-friendly. If you avoid sudden changes in water quality and temperature and check the fish daily, it can be a good first medaka.
Q.How big does it get?: A.There is little data on the adult size of this variety, and individuals vary. It is a small medaka. Sizes vary between individuals, so it is safer to choose a container with some room to spare.
Q.How long does it live?: A.Little reliable data exists on the lifespan of Amaterasu, so we cannot give a clear estimate. It will vary with the environment and the individual, so consistent daily care and observation matter most.
Q.Can it live with other fish?: A.It is said to get along with peaceful, small fish, but avoid large or aggressive tankmates. After combining them, check that the medaka are not being chased and are still getting enough food.
Q.Will its offspring look the same?: A.Offspring do not always inherit the parents' traits, and the depth of red and the glow can vary between individuals. If you plan to breed them, look closely at the parents' features and raise the fry in a separate container to make them easier to manage.