There are four types of flying foxes that are native to Australia. They are the black flying fox, the gray headed flying fox, the little red flying fox, and the spectacled flying fox. Their scientific names, in the same order, are Pteropus alecto, Pteropus poliocephalus, Pteropus scapulatus, and Pteropus conspicillatus.
Fruit bats refer to the family Pteropodidae so yes, the Malaysian Flying Fox is a fruit bat, but Pteropodidae includes many other species as well, like: Grey-headed Flying Fox Spectacled Flying Fox Little Red Fruit Bat Tube-nosed Fruit Bat etc. The Malaysian Flying Fox is also known as Large Flying Fox or Giant Flying Fox because it is the largest bat on earth.