The Marine Conservation Society has released an update to its 'Good Fish Guide', providing ratings for over 120 species of seafood. The guide aims to help consumers make sustainable seafood choices by designating 'green' or 'best choice' options and 'red' or 'fish to avoid' based on the species, location, and fishing or farming methods. The latest update introduces new ratings and highlights improvements in the sustainability of some seafood options, such as English farmed scallops and English Channel sprat, while also pointing out concerns and the need for improved management practices in the sustainability of other seafood, such as American lobster and UK squid, which have been designated as 'red' or 'fish to avoid' due to potential impacts on endangered species and lacking data on population sizes and sustainability.