Essentially the same as that in any other vertebrate - including us. It is the central column of the skeleton, and the conduit for the nerve-bundle that is the spinal cord.
fishs eddy
The function of a backbone in fish is to house and protect the spinal cord. It is the primary structural framework upon which the fish's body is built.
Structural integrity of Dna's backbone.
NO
deers or fishs
Provide structure and strength for locomotion and protection for the notochord/spinal cord.
The Indian & Pacific Oceans .
sharks and more
bass, bream,
chalk goby
Gills
His fish are named Brock and Swimmy