Pectinidae originating in Japan, Russia, the Kuril Islands and Japan, South to the North of the island of Honshu and Hokkaido, for the big shell cold water. The growth rate is slower than the scallops shells larger than 10 cm or more. The left valve slightly flat, slightly less than the right shell always purple. Thistles and shell that the sudden, yellow-white, large ears and the front shell rib radial table 15-20 exit enclosures generally do not speak in the sea level by chance, without ribs. Scallops in a heavy sludge or seabed sediments. The natural distribution of the water depth 6-5 growth temperature range 60m-20 ℃, 15. Temperature ℃ or so appropriate growth is lower than 5 ℃ to slow growth, which is slowing down significantly at 0 ℃ motion until the water temperature stops rising when; up to 23 ℃-life skills gradually softer than 25 ℃ after the move stalled in recent scallops is a kind of high salt, salt for appropriate range from 24-40 ‰ ‰ ‰ salinity not less than 24.
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