Litopenaeus setiferus (also accepted: Penaeus setiferus, and known by various common names including Atlantic white shrimp, white shrimp, gray shrimp, lake shrimp, green shrimp, green-tailed shrimp, blue-tailed shrimp, rainbow shrimp, Daytona shrimp, Mayport Shrimp, common shrimp, southern shrimp, and, in Mexico, camaron blanco) is a species of prawn found along the Atlantic coast of North America and in the Gulf of Mexico. It was the subject of the earliest shrimp fishery in the United States.

Distribution The range of L. setiferus extends from Fire Island, New York to Ciudad Campeche, Mexico. It requires warm water, and is unable to survive below 3 °C (37 °F), with appreciable growth only occurring at temperatures over 20 °C (68 °F).

Description Litopenaeus setiferus may reach a total length (excluding antennae) of 197 millimetres (7.8 in), with females being larger than males. The antennae may be up to three times the length of the body, which is bluish white with a tinge of pink on the sides, and black spots. The pleopods are often redder, and the uropods and telson are green. The rostrum is long and thin, with 5–11 teeth on the upper edge and two on the lower edge, and continues along the carapace as a dorsal carina (ridge). Deep grooves alongside the carina separate the related species Farfantepenaeus aztecus ("brown shrimp") and Farfantepenaeus duorarum ("pink shrimp") from L. setiferus, which is sometimes called the non-grooved shrimp.

Ecology Litopenaeus setiferus lives in estuaries and from the littoral zone to water with a depth of 100 feet (30 m) in the Atlantic, or up to 260 feet (79 m) in the Gulf of Mexico.