Squid (Sato)

最近ミミイカを良く観察しています。餌はイソスジエビ。小さいのを一週間に一匹位食べます。日中はほとんど寝ていて、砂の中に潜っています。砂に潜るときはお尻？（イカの場合、頭？）から入り、器用に手？を使って砂を頭にかけて身を隠します。ほとんど砂に潜ってるから、水槽にはエビの姿ばかり。何飼ってるのかよくわからん（笑）。まぁしかし、ダイオウイカは超でかいし、ミミイカはとても小さい。同じイカでも実に多様だよなぁ。

This is a bottle tailed cuttlefish, mimi ika in Japanese, in my aquarium. It is inactive for all the daytime, it seems just sleeping. Interestingly, their eyelids works well, and the color is silver to shut the light up during their sleep. In general, longevity of such cattle fishes are a year, but the largest ones, up to several meters, like giant squid is thought to be living for 3-5 years. It means their speed of growth is very high, and such rapid growth may indicates their very high voracity. In my small aquarium the small squid eat less, only 1tiny shrimp a week.