[2] He was sent by Ariobarzanes in 368 BCE as an Achaemenid emissary to Delphi, where the Greek cities at war between themselves had assembled for peace negotiations.
[5] Thebes was being feared by both Sparta and Athens, and these two cities tried to use Achaemenid influence as a mediator to resolve the conflicts in Greece, as had been the case with the Peace of Antalcidas.
[2] Both Philiscus and Ariobarzanes were made citizens of Athens, a remarkable honour suggesting important services rendered to the city-state.
[4] The Achaemenid king proposed a new peace treaty, this time highly tilted in favour of Thebes, which required Messenia to remain independent and the Athenian fleet to be dismantled.
[6] Philiscus later played an important role as a general (hyparch) leading an army of mercenaries in Asia Minor.