Definitely not A. australis (or any shortfinned eel), take a look where the dorsal fin starts relative to the pectoral fins/head - definitely a species of longfin eel. A. reinhardtii is very infrequently offered for sale outside of Australia and Japan relative to A. marmorata, not to mention that marmorata naturally occurs in OP's country.
A. marmorata is almost certainly the most likely suspect!
A. marmorata is almost certainly the most likely suspect!