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A small Japanese fish (Oryzias latipes) that is commonly found in rice paddies and is often used in biological research or in stocking aquariums.

[Japanese : me, eye + -daka, combining form of taka-, stem of takai, high (in reference to its large, protuberant eyes).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(mɪˈdæk ə)

n., pl. -kas.
a small Japanese fish, Oryzias latipes, often kept in aquariums.
[1930–35; < Japanese]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Alterations in social behavior of Japanese medaka (Oryzias latipes) in response to sublethal chlorpyrifos exposure.
[60] showed opposing results in medaka fish, who claimed that after co-administration of MeHg:Se in molar ratio about 1, the interaction between MeHg:Se gave a limited protection against toxicity of both elements.
Exposure to diethylstilbestrol during embryonic and larval stages of medaka fish (Oryzias latipes) leads to sex reversal in genetic males and reduced gonad weight in genetic females.
Medaka fish exhibits longevity gender gap, a natural drop in estrogen and telomere shortening during aging: a unique model for studying sex-dependent longevity.
reported a study of characterizing behavioral changes of Medaka fish before and after treatment by diazinon using 2D fast Fourier transform (FFT) [2].
Fluck, "Microtubule-based movements during ooplasmic segregation in the medaka fish egg (Oryzias latipes)," The Biological Bulletin, vol.
LET was also found to inhibit oocyte growth and reduce plasma vitellogenin (VTG) levels in adult female Medaka (Sun et al., 2007).
Tier 1 mechanistic screening data can be linked to various end points in the fish short-term reproduction assay (FSTRA) and to apical responses in the Tier 2 Medaka extended one-generation reproduction test (MEOGRT) (Figure 4).
A detailed linkage map of medaka, Oryzias talipes: comparative genomics and genome evolution.
Effect of trifloxystrobin on hatching, survival, and gene expression of endocrine biomarkers in early life stages of medaka (Oryzias latipes).