昼寝の効用 　Benefit of napping

メダカの昼寝？：
メダカは日光浴が大好きです。
春の日差しが強くなる今頃は浮いている網状の水草に体を置き、泳がないで動き止めて日光浴中のメダカ達をよくみます。
とても気持ちよさそうに昼寝しているようです。
Killifish’s napping?
Killifish like sun bathing.
Around this time of the year when the sun gets stronger, I often see them on the network of floating waterweeds motionlessly without swimming in the sun.
They look very comfortable and look as if they were having a nap.