
I want to increase the number of labels on my y-axis.  Here is my code:  
 
 plot(fish$species, fish$fl, ylim=c(5,25), xlab="Species", ylab="Fork Length (in)")
 
The plot is great but it only has numerical y-labes every five values (i.e. labels at 5, 10, 15, and 25).   I want R to give me the same plot but a y-axis label at every integer (i.e. labels at 5,6,7,8,9,10,...25).  
 
I have been unable to figure this out.  Any adice would be greatly appreciated.  
 
Mike 		 	   		  
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