The zoo now has twelve primate species:
Mandrill
Siamang
Northern white-cheeked gibbon
Javan gibbon
Lion-tailed macaque
Black crested macaque
Crab-eating macaque
Black-capped capuchin
Ring-tailed lemur
Cotton-top tamarin
Common marmoset
Pygmy marmoset
Considering they also have African lion, Sumatran tiger, African wild dog, Serval, Nepalese red panda, Asian small-clawed otter, Slender-tailed meerkat, Dromedary camel; and the requisite Australian collection, Tasmania Zoo is yet another facility putting the country’s main zoos to shame.
They also have a breeding group of Capybara, Cheetah and Caracals - pretty comprehensive range of exotic mammals.
You got me curious about which zoos currently have the most diverse primate collections in the region and according to the exotic mammal lists it is as followed. Perth Zoo is the current frontrunner from the rough list I created. Lots of places have exactly 10 species but I have included the select few that sit above that number (probably missed a zoo or two).
1)
14 primate species
Perth Zoo: Sunda Slow Loris, Ring-tailed Lemur, Black-and-white Ruffed Lemur, Golden Lion Tamarin, Emperor Tamarin, Cottontop Tamarin, Pygmy Marmoset, Common Marmoset, Bolivian Squirrel Monkey, Black-capped Capuchin, Hamadryas Baboon, White-cheeked Gibbon, Javan Gibbon, Sumatran Orangutan
2)
13 primate species
Mogo Wildlife Park: Ring-tailed Lemur, Black-and-white Ruffed Lemur, Golden Lion Tamarin, Emperor Tamarin, Cottontop Tamarin, Pygmy Marmoset, Bolivian Squirrel Monkey, Black-capped Capuchin, Siamang, White-handed Gibbon, Javan Gibbon, Hybrid Orangutan, Western Lowland Gorilla
Adelaide Zoo: Ring-tailed Lemur, Golden Lion Tamarin, Emperor Tamarin, Cotton-top Tamarin, Pygmy Marmoset, Bolivian Squirrel Monkey, Mandrill, Dusky Langur, Black-and-white Colobus, Hamadryas Baboon, White-cheeked Gibbon, Siamang, Sumatran Orangutan
3)
12 primate species
Tasmania Zoo: Ring-tailed Lemur, Common Marmoset, Pygmy Marmoset, Cotton-top Tamarin, Black-capped Capuchin, Mandrill, Crab-eating Macaque, Sulawesi Crested Macaque, Lion-tailed Macaque, Javan Gibbon, White-cheeked Gibbon, Siamang
Melbourne Zoo: Ring-tailed Lemur, Black-and-white Ruffed Lemur, Emperor Tamarin, Cotton-top Tamarin, Bolivian Squirrel Monkey, Black-handed Spider Monkey, Black-and-white Colobus, Hamadryas Baboon, White-cheeked Gibbon, Siamang, Sumatran Orangutan (including hybrids), Western Lowland Gorilla
4)
11 primate species
Darling Downs Zoo: Golden Lion Tamarin, Red-handed Tamarin, Emperor Tamarin, Cotton-top Tamarin, Pygmy Marmoset, Common Marmoset, Bolivian Squirrel Monkey, Black-capped Capuchin, Rhesus Macaque, Hamadryas Baboon, Siamang