Length of male's shell: 19 to 23 cm; female's shell: 18 to 21 cm
Male: 1 to 1.6 kg; female: 0.8 to 1.2 kg
In captivity: 58 years; in the wild: 33 years
Endangered (IUCN). Protected species (CITES, Appendix II). Designated Special Concern in 1996. Status re-examined and designated Threatened in 2007. (COSEWIC).