And it's becoming a very popular hobby.

Until 1997, Australian government regulation prevented anyone from keeping a reptile as a pet.

Now there are more than 320 species that can be kept as pets ranging from snakes, frogs and lizards to turtles and more.

Geckos are the most popular choice among children.

Reptiles are relatively easy to look after, don't need a lot of space and are ideal for people with fur allergies.

The Castle Hill Reptile Expo is the perfect opportunity for those who want to take up reptile keeping to learn more about these interesting creatures or buy anything related to the hobby.

Within the expo there will be two talks about venomous reptiles, several stations for people to touch the animals and a facepainting stand for the children.

World-renowned reptile photographer and writer Bill Love will be giving tips on how to best capture the essence of the scaly creatures on camera.

Organiser Adrian Hemens, from Castle Hill, has been fascinated by reptiles since childhood and became a keeper and breeder in 1997.

The South African native has 50 reptiles in his home, mostly pythons and geckos.

"I've been spoiled for choice all my life with South Africa and Australia being two of the world's hotspots for reptiles," the 45-year-old said.

Mr Hemens has dedicated the last 20 years to perfecting the art of keeping and breeding reptiles.

He shared his knowledge in a 13-part television series in 2009/2010 called Adrian's Reptile World.

The series was recently shown again on community television channel TVS (channel 44).

The Castle Hill Reptile Expo will be at the Hills Basketball Stadium in Castle Hill on Sunday, February 12 from 9am-5pm. Entry is $10 for adults and $5 for children under 16.

Details: reptiles.com.au.