Otanes succeeded Megabazus as the governor/supreme commander of the united forces of the peoples of the Aegean (5.26.1), and  subjugated Byzantium and other cities during the Ionian revolt (5.123.1, 5.116.1).

According to Herodotus:
This Otanes, then, who sat upon that seat, was now made successor to Megabazus in his governorship.
He captured Byzantium, Calchedon, Antandrus in the Troad, and Lamponium, and with ships he had taken from the Lesbians, he took Lemnos and Imbros, both of which were still inhabited by Pelasgians.

According to Herodotus, this Otanes also married one of Darius' daughters (5.116.1):
"Daurises, Hymaees, and Otanes, all of them Persian generals and married to daughters of Darius, pursued those Ionians who had marched to Sardis, and drove them to their ships.
After this victory they divided the cities among themselves and sacked them."

— Herodotus 5.116
"Otanes" is a name given to several figures that appear in the Histories of Herodotus.
One or more of these figures may be the same person.
Otanes succeeded Megabazus as the governor/supreme commander of the united forces of the peoples of the Aegean (5.26.1), and  subjugated Byzantium and other cities during the Ionian revolt (5.123.1, 5.116.1).
According to Herodotus:
This Otanes, then, who sat upon that seat, was now made successor to Megabazus in his governorship. He captured Byzantium, Calchedon, Antandrus in the Troad, and Lamponium, and with ships he had taken from the Lesbians, he took Lemnos and Imbros, both of which were still inhabited by Pelasgians.
According to Herodotus, this Otanes also married one of Darius' daughters (5.116.1):
"Daurises, Hymaees, and Otanes, all of them Persian generals and married to daughters of Darius, pursued those Ionians who had marched to Sardis, and drove them to their ships. After this victory they divided the cities among themselves and sacked them."
— Herodotus 5.116
"Otanes" is a name given to several figures that appear in the Histories of Herodotus. One or more of these figures may be the same person.
Otanes (son of Sisamnes)