Deep blue body color reminiscent of the sea. Representative blue medaka variety derived from Miyuki lineage.
Marine Blue medaka is a representative blue medaka variety derived from Miyuki lineage, whose deep blue body color evokes the open sea. The indigo-to-deep-blue coloration shifts in expression depending on viewing angle and light, creating a cool and elegant beauty. White containers or bright backgrounds best bring out the blue, though the variety also holds strong presence in dark containers. Hardy in 5–30°C, neutral to slightly alkaline water. Compatible with green water (phytoplankton-rich) and outdoor biotope setups. Selective breeding of deeply blue individuals produces more intensely colored offspring.
Origin
Japan (selectively bred variety)
Lifespan
2-3 years
Size
3-4cm
Temperature
5〜30℃（適温20〜28℃）
Medaka pellets
White containers highlight blue color
5-30°C
Moderate sunlight improves coloring
Relatively high fixation rate
Some individuals show external light from Miyuki lineage
Beginner. This is a beginner-friendly species. No special equipment or experience is required, and it can be kept successfully with basic care setup.
The ideal temperature for Marine Blue Medaka is 5〜30℃（適温20〜28℃）. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Marine Blue Medaka is 2-3 years. With proper care and nutrition, they can live a long and healthy life.
Marine Blue Medaka typically reaches 3-4cm as an adult. Size may vary depending on care conditions and individual genetics.
Marine Blue Medaka feeds on: Medaka pellets. Aim for a balanced diet with appropriate feeding frequency.
The price of Marine Blue Medaka varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
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