Mercury and dioxins contained in the (methyl mercury) has become a problem (seafood in a broad sense) seafood, and a recommendation for pregnant women, and to limit the number of times and intake of seafood recently have. Ministry of Agriculture, Forestry and Fisheries has announced the body dioxin concentration of fish and shellfish. In addition, health effects there are concerns about body dioxin concentration of tuna in the Mediterranean is high. Recommendations the Ministry of Health, Labour and Welfare and to limit the number of times and intake of fish and shellfish (bioaccumulation), as there is an effect on the fetus mercury is accumulated in fish of large, located at the top of the food chain, such as tuna have.
It's two arms two legs, but it is also called (combed Nishi-jin) aquatic people from that there are features such as with gills and scales, it is referred to as a merman (Merman) in English often. In addition, it is common human upper body, lower body is to call a mermaid thing (no legs) of the appearance of the fish.
Among the creative works of recent years, the form "There is webbed and fins to limbs, whole body is covered with scales, head those of fish, organisms such as human beings to speak the words" and is used in stereo basis there.
Adult fish as much as the total length 30cm, the body is flat from side to side like a leaf. There is a whitish spots on systemic There are several lines are horizontal stripes of brown in the land of green-brown body color, but the spots to change quickly by the stimulation and environment. Mouth is small but thick lips. Skin is relatively thick and durable.
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