fish leong | fish attack Essential Fish Habitat Fundamental Fish Habitat (EFH) was defined by the U. T. Congress in the 1996 changes to the Magnuson-Stevens Fishery Conservation and Management Act, or Magnuson-Stevens Act, as "those waters and substrate important to fish for spawning, breeding, nourishing or growth to maturity. "|1| Implementing regulations clarified that lakes and rivers include all aquatic areas and their physical, chemical, and biological properties; substrate includes the associated biological communities that make these areas well suited for fish habitats, and the description and identification of EFH should include habitats used whenever you want during the species' life circuit.|2| EFH contains all types of aquatic habitat, including wetlands, coral reefs, fine sand, seagrasses, and rivers.|3| NOAA Fisheries works with the regional fishery management councils to designate EF...