The term "Genus Crangon" refers to a small genus of shrimp that are commonly found in the North Atlantic and Pacific Oceans. There are several synonyms for this term, including the common names brown shrimp, sand shrimp, and common shrimp. In addition, there are several scientific names that are also used to refer to this genus, such as Crangon vulgaris, Crangon septemspinosa, and Crangon franciscorum. These synonyms all refer to the same small shrimp species, which are known for their delicate flavor and firm texture. They are often used in seafood dishes and are a popular choice for shrimp cocktails, salads, and stir-fries.