Medaka Shogoukiku

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Medaka Shogoukiku (Oryzias latipes) is a selectively bred Japanese rice fish known for its attractive metallic appearance and elegant swimming style. Like other Medaka varieties, Shogoukiku are small, peaceful community fish that thrive in a wide range of water conditions.

They are particularly well suited to planted aquariums, nano ponds and outdoor tubs, making them a fantastic choice for aquarists looking for a colourful and easy-care fish.

Medaka are active during the day and are best kept in groups, where their natural social behaviour can be observed. With suitable conditions, they can also readily breed, with females producing eggs regularly during the warmer months.

Quick Care Guide

• Scientific Name: Oryzias latipes
• Common Name: Medaka Shogoukiku / Japanese Rice Fish
• Care Level: Easy
• Temperament: Peaceful
• Adult Size: Around 3–4 cm
• Recommended Group: 6+
• Temperature: Approximately 15–28°C
• pH: Around 6.5–8.0
• Diet: High-quality flakes, micro pellets and frozen/live foods
• Tank: Planted aquarium, tub or pond
• Lifespan: Around 2–3 years with good care

FAQ

Can Medaka Shogoukiku live outdoors?

Yes. Medaka are exceptionally well suited to outdoor tubs and ponds, provided the setup is secure from predators and extreme temperatures.

Do Medaka need a heater?

Usually not. They are remarkably tolerant of temperature fluctuations and can be kept without a heater in many Australian setups.

How many should I keep together?

A group of 6 or more is recommended. Larger groups generally display more natural behaviour and make an impressive display.

Can they live with other fish?

Yes, provided tankmates are peaceful and small enough not to eat them. Avoid large or aggressive species.

Will Medaka Shogoukiku breed?

Yes. Given good conditions, Medaka can breed readily. Females may produce eggs regularly when temperatures and daylight increase.

Common Mistakes

Keeping too few

Medaka are social fish and look and behave best when kept in a group.

Overfeeding

Their small size means they require very little food. Feed small portions that they can consume quickly.

Choosing unsuitable tankmates

Large, aggressive or predatory fish can easily stress or consume Medaka.

Poor water quality

Although hardy, Medaka still require clean, well-maintained water. Regular maintenance and avoiding overstocking are important.