fishes are considered as vertebrate.Why?
Answer (1)
Vertebrates are animals which carry on the body a vertebral column, known also as spine or backbone. That spinal column consists of the several vertebrae forming together the shell to guard the spinal cord.Fishes, either of the class Agnatha or jawless fishes and Gnathostomata or jawed fishes, possess a vertebral column although it may be cartilaginous in some species, like sharks, instead of bony.This is what the term vertebral column describes and explains why fishes are classified among vertebrates.
