http://en.wikipedia.org/wiki/Anatomy
Skeleton of a butterfly fishshowing the vertebral column and fin raysOrgans of a fish
The body of a fish is divided into a head, trunk and tail, although the divisions between the three are not always externally visible. The skeleton, which forms the support structure inside the fish, is either made of cartilage, in cartilaginous fish, or bone in bony fish.
Skeleton of a butterfly fishshowing the vertebral column and fin raysOrgans of a fish
The body of a fish is divided into a head, trunk and tail, although the divisions between the three are not always externally visible. The skeleton, which forms the support structure inside the fish, is either made of cartilage, in cartilaginous fish, or bone in bony fish.
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