Grouper is a benthic fish, and its adult fish mainly inhabit coral reefs and offshore rocks, and some of them inhabit the sea areas with sandy, muddy or muddy sediments, such as bronze grouper, brown grouper and gem grouper, while its young fish prefer to choose seaweed beds, mangroves and other habitats.

Grouper is the top predator of coral reef ecosystem, and most of them are carnivorous, mainly feeding on other fish, crustaceans and cephalopods. However, there are also some filter-feeding groupers, such as Epinephelus, which have dense gill rakes and can filter plankton such as copepods, tunicates, amphipods, fish and gastropods in the water for food.

Low-temperature preservation method of grouper;

Low-temperature preservation technology is the earliest developed, deepest studied and most widely used preservation technology for aquatic products, which mainly includes cold storage, cold seawater preservation, ice temperature preservation, slight freezing preservation and frozen storage preservation. In addition to live fish transportation, the conventional preservation method of grouper is low temperature preservation.

Low-temperature preservation technology can effectively inhibit the microbial and enzyme activities of grouper, and can maintain the freshness and quality of grouper, thus prolonging the shelf life.