The Department of Agriculture/Bureau of Aquaculture (DoAg) is responsible for regulating, inspecting, and licensing aquaculture operations in Connecticut.
"Commercial hatchery" is defined in Chapter 490 of the CT State Statutes as "an institution or place where legally acquired fish are held, hatched and reared for sale or where fish so acquired or hatched are reared or held for sale in waters which are under complete control of the owner." This definition applies to a variety of operations, including fish produced for food, fish grown for stocking or as bait, ornamentals, etc. This provision also applies to lobsters and blue crabs.
All "commercial hatcheries" growing finfish, lobsters, and/or blue crabs must complete the fish producer license. The license annually expires on December 31, and must be renewed for January 1.