raw. Sashimi, also known as sashimi, is called fish fillet, fillet or silver carp in ancient times. It is a general term for fresh fish and shellfish sliced raw and dipped in seasonings. Therefore, conch sashimi is made from raw conch slices. Conch is a mollusk gastropod, mollusk phylum. Shellfish are mainly divided into five outlines. There are more than 7, species in the world, and the marine species can be called conch.