👉 Macropoxyuris is a genus of marine crustaceans in the family Cyprinidae, which includes a wide range of species found in various oceans and estuaries around the world. These crustaceans are known for their unique appearance, including their elongated bodies that resemble those of fish with a modified head and body. Macropoxyuris is characterized by its large size, which can reach up to 10 inches long when fully grown.