https://wildlifeinformer.com/types-of-fruit-bats/
depends on the species, anon.
just a sample:
"Rodrigues flying foxes are small fruit bats that weigh about 350 grams and their wingspan measures about 90 centimeters. They’re diet consists of fruits like mangos, figs, and tamarinds."
"Golden-crowned flying foxes get their name from the golden fur that caps their head and extends to their shoulders. Their favorite foods are different kinds of figs and leaves."
I'm not going to post a link to an article about Vampire Bats.