At what age are vertebrae and rib numbers decided?

Andrew Leslie Saul s883730 at minyos.xx.rmit.EDU.AU
Tue Jun 13 02:32:48 EST 1995


Can someone provide a reference as to the age of a fish when rib numbers 
and vertebral numbers are determined?  ie. when environmental 
factors such as temperature cannot increase or decrease the number of these two 
characters.  

Cheers
Andrew Saul
s883730 at minyos.xx.rmit.edu.au



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