New to clams and I picked this one up about a month ago while snorkeling here in Okinawa. It's about 2 inches and has done really well in my 10g nano. Was wondering what kind it is and should I have it in the sand or up on the rocks. It was in rock in about 5 feet of water when I got it. I have it resting on a oyster shell in the sand currently (not sure if it has attached). Tons of them here with lots of different colors and patterns. The locals eat them- sashimi style.