What are differences between a star fish and a fish?

Answer 1

A star fish is not a fish and it does have the word fish in it but its not a fish.

A fish is an aquatic vertebrate with an internal skeleton of bone or cartilage and usually a relatively complex central nervous system. Fish move mostly by swimming through the water. Most fish have bilateral symmetry, meaning they are symmetrical across one line running from front to back, though some fish lack any symmetry. As vertebrates, they are in the phylum chordata.

A star fish is an invertebrate in the phylum echinodermata. They do not have any sort of internal skeleton and have a simple nervous system. They move very slowly, crawling across the sea floor on hundreds of tiny feet. Like most echinoderms, starfish are radially symmetrical, with five or more lines of symmetry.