Fish are classified as vertebrates because they have an internal skeleton.
The cray-fish is a vertebrate. It has a backbone.
invertebrate
it is probably an invertebrate.
invertebrate
Vertabrate... :)
Vertebrate.
As a jelly fish doesn't have a spine, a jelly fish is an invertebrate.
A dogfish, all fish actually, is an invertebrate.
invertebrates
Invertebrates
It is a fish, fish have backbones, having a backbone makes and animal a vertebrate.
All fish are vertabrates.