How Can I Tell The Gender Of My Garden Skink?

My friend told me that if you hold them round the stomach (just how you normally hold them), the males will try to turn around and bite you but the females won't bite you, and yes by the colours of their bellys (Females= White Bellys, and Male= Yellow Bellys.)

Females are white and longer and males are yellow

How do you know if a common garden skink is a female or fe

females are silver and males are kind of yellow and orange

The male's pattern on his back is more pronounced than the female's. Sides may even be a little translucent.