Medaka males can mate 27 times daily, but sperm performance drops fast | HappeningNow.news
Published Date: July 15, 2026

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Medaka males can mate 27 times daily, but sperm performance drops fast

Oryzias latipes, commonly known as medaka, is a small fish measuring about 2–3 cm (0.8–1.2 inches) in length that exhibits highly active…

Source Phys.org AI Summary Updated 54m ago
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Oryzias latipes, commonly known as medaka, is a small fish measuring about 2–3 cm (0.8–1.2 inches) in length that exhibits highly active spawning behavior during the breeding season. Previous research by an Osaka Metropolitan University research team showed that males can spawn an average of 19 times per day and up to 27 times in environments with many fema…

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