Beginning in 1834, an index of business activity by the Cleveland Trust Company provides data for comparison between recessions. Beginning in 1854, the National Bureau of Economic Research dates recession peaks and troughs to the month. However, a standardized index does not exist for the earliest recessions. In 1791, Congress chartered the First Bank of the United States to handle the country's financial needs.
n. pl. shellfish or shellÂ·fishÂ·es. 1. Any of various edible aquatic invertebrate animals having a shell, especially mollusks such as clams and oysters, and crustaceans such as lobsters, crabs, and shrimp. 2. An edible mollusk, in contrast to a crustacean: regulations concerning fish, crustaceans, and shellfish. 3. The edible flesh of such animals.
Crayfish, also known as crawfish, crawdads, freshwater lobsters, mountain lobsters, or mudbugs, are freshwater crustaceans resembling small lobsters, to which they are related; taxonomically, they are members of the superfamilies Astacoidea and Parastacoidea. They breathe through feather-like gills.