[mi-dak-uh] 
| a small Japanese fish, Oryzias latipes, common in rice fields, often kept in aquariums. |
| me·da·ka (mĭ-dä'kə) n. A small Japanese fish (Oryzias latipes) commonly found in rice fields and often used in biological research or in stocking aquariums. [Japanese, killifish : me, eye + daka, high.] |