Re: Do all fish have the same number of bones?

Sylvia,

Thank you for your question pertaining to fish anatomy and structure. To begin 
with, there are over 25,000 species of fish living in our waters. All these 
fish have a different anatomical structure pertaining to their survival which 
results in a wide range of bone numbers. For instance, sharks and stingrays 
which are fish, have an anotomical make-up consisting of ONLY cartilage. 
Cartilage is a connective tissue  that is flexible (Dictionary of Biology, 
1990).

I hope this answers your question.........Thanks again!