Query: The epithet Delphinius is associated with what animal?
Context: Apollo was worshipped as Actiacus (/ækˈtaɪ.əkəs/ ak-TY-ə-kəs; Ἄκτιακός, Aktiakos, literally "Actian"), Delphinius (/dɛlˈfɪniəs/ del-FIN-ee-əs; Δελφίνιος, Delphinios, literally "Delphic"), and Pythius (/ˈpɪθiəs/ PITH-ee-əs; Πύθιος, Puthios, from Πυθώ, Pythō, the area around Delphi), after Actium (Ἄκτιον) and Delphi (Δελφοί) respectively, two of his principal places of worship. An etiology in the Homeric hymns associated the epithet "Delphinius" with dolphins. He was worshipped as Acraephius (/əˈkriːfiəs/ ə-KREE-fee-əs; Ἀκραιφιος,[clarification needed]