R incorrectly counts why?

Question

R

Good afternoon. There is a file fish.csv (at the end of the question)
I read from it
d <- read.csv("fish.csv")
I try to see the table
table(d$sex)
and R tells me

f f     m 
 19   1  23

And should

f     m
20  23

And if you create a boxplot
boxplot(d$wingspan ~ d$sex)
shows this

Which is also not correct at all.
What's wrong here?

"wingspan","sex"
"23.8","m"
"26.6","f"
"24.4","m"
"30.3","f"
"22.3","m"
"24.5","m"
"24.1","m"
"23.5","m"
"31.0","m"
"22.6","m"
"23.5","m"
"25.1","f"
"28.7","f"
"30.5","m"
"29.7","f"
"18.4","m"
"26.3","m"
"27.4","f"
"25.1","m"
"22.4","f"
"22.4","m"
"32.3","f"
"25.6","m"
"20.8","m"
"25.7","m"
"23.9","m"
"13.1","f"
"26.8","f"
"21.1","f"
"22.0","m"
"19.6","f"
"27.2","f"
"18.3","f"
"23.4","f"
"23.7","f"
"30.7","m"
"26.1","f"
"23.4","f"
"25.7","m"
"21.9","f"
"27.6","m"
"22.9","m"
"29.2","f"

Answer 1

d <- read.csv("fish.csv", header=TRUE )
PS It is highly recommended to learn the help command.