Is a freshwater yabby a vertebrate or invertebrate?

Yabbies are crustaceans, and all crustaceans are invertebrates. They have an exoskeleton, with no backbone or spinal cord. They belong to the Phylum Arthropoda, which also includes organisms such as insects, Spiders, centipedes and millipedes. Vertebrates include only some members of the Phylum Chordata: specifically, mammals, birds, fish, reptiles and amphibians.