L66 King Tiger- sexing breeding

[AndyAps.com]

Hi everyone.
Aswell as the zebs i have a seperate 2foot tank wontaing 2 L66 which i bought a month ago.
My problem is im not sure how to sex them. im pretty sure i have one of each sex because one has high odontal growth on pectorals and on the base of its tail while the other has none. one has a wider larger head and the other is plump. looking at the fish i thought the wide head and odontal growth pointed me to a male.........however in aqualog book it says the one with the hairy growths is the female???!!

does anyone know how to sex this species and has anyone got any tips for breeding etc?
Thanks in advance