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メダカ ・ Killifish

2015.10.27 (Tue)

メダカ

Measuring less than 4cm long, medaka (killifish) are small light brown fish with white underbellies. With the exception of Hokkaido, these small fish inhabit ponds, marshes, small rivers, and paddy fields all across Japan and Eastern Asia. Until about twenty years ago, medaka were essentially always expected to be found in the rivers and irrigation channels. These fish were recently sighted in a small area of Yurihama’s Ayame Pond. That area was turned into the Medaka Amusement Pond- a space restored as a natural habitat for the waterfront’s plant and animal life.

メダカは体長4cm以下、背は淡い褐色で腹部は白色。北海道を除く日本各地、アジア東部に分布し、池、沼、小川、水田に生息します。20年ほど前までは、川や用水路に当たり前に生息していました。近年、あやめ池の一角にある水溜りに生息が確認され、現在は、メダカ遊園池として、水辺の動植物が生活できる生息空間が復元されました。

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