Kohaku (Amber)
Kohaku medaka gets its name from its warm, amber-like coloring reminiscent of tortoiseshell. Compared to the popular Yoshihime variety, its tones are more subdued, giving it a quiet, understated beauty. Calm in temperament and hardy, Kohaku is considered beginner-friendly and thrives on a simple daily routine built around standard medaka pellet food. With a typical lifespan of 2 to 3 years and an adult size of 3 to 4 cm, it's an easy fish to keep whether in an outdoor water garden or a small indoor container. It's a great choice for anyone drawn to subtle, elegant coloring or picking up their very first medaka.
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Kohaku (Amber) key facts
- Care level
- Beginner-friendly
- Lifespan
- 2-3 years
- Size
- 3-4cm
- Diet
- Medaka pellets
- Container & Tank
- An easy variety that looks good in any container. It pairs especially well with Japanese-style vessels such as ceramic water bowls.
- Water Temperature & Quality
- Easy to keep at 5-30°C in neutral to slightly alkaline water. Hardy enough for either outdoor or indoor settings.
- Diet & Feeding
- Feed mainly medaka pellets; moderate color-enhancing food maintains the depth of the amber color.
- Breeding & Egg-laying
- Easy to breed and spawns readily on a spawning mop. Fixation is high and it has near-wild-type hardiness.
- Tank Mates & Compatibility
- Gentle and can be kept with other peaceful varieties. Hardy and suitable for beginners.
About Kohaku (Amber)
Kohaku medaka is prized for its warm, tortoiseshell-like coloring, subtler than the popular Yoshihime variety. Calm, hardy, and beginner-friendly, it lives 2-3 years and grows to 3-4 cm.
7 things to know before welcoming a Kohaku (Amber)
1Amber Color Appeal
Kohaku is best known for its warm, tortoiseshell-like amber coloring. Unlike the vivid tones of the popular Yoshihime variety, it offers a softer, more subdued beauty. Its appearance can shift subtly with lighting and viewing angle, adding to its charm.
2Calm Temperament
Kohaku has a peaceful nature and rarely competes aggressively with other medaka. This makes it a great addition to mixed-variety tanks, and it tends to become quite tame, often gathering at the surface at feeding time.
3Great for Beginners
Kohaku is considered beginner-friendly, tolerating fluctuations in water temperature and quality fairly well. It adapts easily to both outdoor water gardens and indoor tanks, making it a solid first choice for new keepers. With the basics covered, it's a low-maintenance fish.
4A 2-3 Year Lifespan
Kohaku typically lives 2 to 3 years. Since it's a long-term companion, keeping an eye on water temperature shifts and water quality through the seasons helps you monitor its condition day to day.
5Grows to 3-4 cm
Adults typically reach about 3 to 4 cm in length. Coloring and patterns become more defined as they grow from fry, so watching the gradual change is part of the enjoyment. If keeping several together, make sure there's enough space as they mature.
6Pellet Food Basics
A standard medaka pellet food makes a good staple diet. Choose a pellet size suited to their mouths and feed small amounts several times a day rather than one large meal, avoiding overfeeding to keep the water clean.
7Getting Ready
Before bringing your Kohaku home, prepare the tank, water, and temperature in advance. Acclimate them gradually to the new water to reduce stress from sudden changes, since a calm, stable environment also helps their color show at its best.
Frequently asked questions about Kohaku (Amber)
- Q.Is Kohaku medaka suitable for beginners?
- A.Yes, it's considered a hardy, beginner-friendly variety. It tolerates changes in water quality and temperature reasonably well, so consistent basic care is enough to keep it thriving.
- Q.Can it live with other medaka varieties?
- A.Yes, its calm temperament makes it well-suited to mixed tanks. It rarely competes aggressively, so it blends in easily alongside other varieties.
- Q.How long does Kohaku medaka live?
- A.Its typical lifespan is 2 to 3 years. Keeping up with regular water quality and temperature management helps support a healthy, comfortable life.
- Q.How big does it grow?
- A.Adults typically reach around 3 to 4 cm, a fairly standard size for medaka. Coloring becomes more defined gradually as they grow from fry.
- Q.What should I feed it?
- A.A standard medaka pellet food is the staple diet. Feed small amounts several times a day rather than one large portion, to avoid overfeeding and water quality issues.
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Care difficulty, lifespan, size and diet — all basics covered.
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