Hair on a male can vary quite a bit. I have a male who has a long haired coat that is the length of a long haired female, and a male with a really long fluffy coat.
The make with the long coat is also a rex, so he was in the process of molting, and his coat is just now growing back.
Toby- Rex male, Before molt
http://img.photobucket.com/albums/v95/D ... s/hair.jpg
http://img.photobucket.com/albums/v95/D ... lplaid.jpg
Toby- After losing his hair from molt
http://img.photobucket.com/albums/v95/D ... rs/hl4.jpg
Toby- His hair coming back in (these were taken last night)
http://img.photobucket.com/albums/v95/D ... irgrow.jpg
I'm hoping he has his coat back by June for the next hamster show. lol
Toby as a youngster when he and his hair were still growing
http://img.photobucket.com/albums/v95/D ... rs/T-2.jpg
^ This is about the average coat length you see on a lot of males
And here is Jynx and his no coat
http://img.photobucket.com/albums/v95/D ... shadow.jpg
http://img.photobucket.com/albums/v95/D ... /jynx2.jpg