A shrimp was a type of small crustacean found in the waters of Earth. They were commonly consumed by Humans as food. Similar animals were found on other planets. (DS9: "You Are Cordially Invited")
Some cetaceans fed on "tiny shrimp". George and Gracie ate two tons a day. (Star Trek IV: The Voyage Home)
Benjamin Sisko was quite fond of his famous shrimp creole dish. (DS9: "The Abandoned", "Image in the Sand") Sisko's Creole Kitchen offered shrimp remoulade as a daily special in 2373. (DS9: "Paradise Lost")
While trapped in an Akritirian prison in 2373, Harry Kim fantasized about a meal of shrimp with fetran sauce, flambé noodles and fudge ripple pudding. (VOY: "The Chute")
In 2382, Lieutenants jg Brad Boimler and Sam Rutherford drank micheladas with elaborate skewers of shrimp where Boimler accidentally spilled the drinks on the transporter console after hitting one of his eyes on the shrimp skewers. (LD: "Fully Dilated")