Thaw the fish roe, sea urchin, and Artemia nauplii in a separate bowl.
Varieties have black and white, squama lotus stone, stone turtle veins, stone, bamboo, stone, fish roe, etc.
These days, however, many chefs substitute the crab roe with Japanese flying fish roe or tobiko.
Seafood: cuttlefish, squid, shrimp roe, crab roe, fish roe, fish head, etc.