: a small Japanese freshwater fish (Oryzias latipes) usually silvery brown in the wild but from pale yellow to deep red in aquarium strains
Examples of medaka in a Sentence
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The new study reveals that medaka males release less and less sperm with each successive mating, eventually hitting a daily limit.
—
Tommy Tuberville,
Newsweek,
9 Jan. 2025
In the first three mating sessions, the medaka released over 50 percent of their daily sperm output.
—
Laura Baisas,
Popular Science,
8 Jan. 2025
The Japanese rice fish, also referred to as medaka, has transparent skin — perfect for helping researchers investigate the effects of microgravity on marine life, and more specifically, the effects on their bones.
—
Lydia Rivers,
Discover Magazine,
3 May 2021
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Tommy Tuberville,
Newsweek,
9 Jan. 2025
In the first three mating sessions, the medaka released over 50 percent of their daily sperm output.
—
Laura Baisas,
Popular Science,
8 Jan. 2025
The Japanese rice fish, also referred to as medaka, has transparent skin — perfect for helping researchers investigate the effects of microgravity on marine life, and more specifically, the effects on their bones.
—
Lydia Rivers,
Discover Magazine,
3 May 2021
Cite this Entry
“Medaka.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/medaka. Accessed 3 Jul. 2026.
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