that live on, in, or near the bottom of the body of water they inhabit. Some typical saltwater
groundfish species are sole
, and halibut
Saltwater groundfish harvesting is subject to numerous federal regulations in the United States, principally 50 CFR 679, dealing with fishing in Alaskan waters.
Freshwater groundfish harvesting is not subject to federal regulation per se (certain species may be subject to other rules), perhaps because there are fewer true groundfish species that live in fresh water.