Frozen cobia sushi has a nice white color because of their higher fat content. We sell frozen cobia fillets that are a product of Unified Seafood Company. This product is flash frozen with filtered wood smoke(Carbon Monoxide) which is used as a preservative and guarantees the highest quality for making sashimi. They are caught primarily with hook and line, and their maximum length of 2 metres (78 inches). Each piece is ~1.1 lbs.