Japanese Medaka Ricefish – Elegant & Hardy Freshwater Fish
The Japanese Medaka Ricefish (Oryzias latipes) is a charming freshwater fish admired for its graceful swimming behaviour, peaceful temperament, and remarkable adaptability.
Native to East Asia, particularly Japan, this small and active fish is commonly found in shallow ponds, rice paddies, and slow-moving freshwater habitats.
Medaka Ricefish are known for their slender bodies, delicate fins, and beautiful natural appearance. Selectively bred varieties are also available in a wide range of colours, including white, orange, gold, and metallic shades.
Hardy and relatively easy to maintain, Medaka are excellent choices for planted aquariums, peaceful community tanks, and suitable outdoor container ponds.
Their active surface-swimming behaviour and social nature make them especially enjoyable when kept in small groups.
With their elegant appearance, adaptability, and fascinating breeding behaviour, Japanese Medaka Ricefish are a wonderful addition to freshwater aquariums.
Care Guide
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Parameter
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Details
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Scientific Name
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Oryzias latipes
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Common Name
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Japanese Medaka Ricefish
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Other Names
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Japanese Ricefish, Medaka
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Origin
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East Asia, especially Japan
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Adult Size
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Approximately 3–4 cm
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Temperature
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18–26°C preferred
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pH
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6.5–8.0
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Water Hardness
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Soft to moderately hard
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Minimum Tank Size
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40 L+ recommended
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Diet
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Omnivore; small pellets, flakes, live and frozen foods
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Temperament
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Peaceful
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Care Level
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Easy / Beginner
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Group Size
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6+ recommended
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Lifespan
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Approximately 2–4 years
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Swimming Level
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Upper / Surface
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Breeding
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Egg Layer
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Aquarium Type
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Planted Aquarium / Community Aquarium / Outdoor Container Pond
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