An aplustrum (Latin: aplustre), or Aflaston (from Greek), is a decorative extension of the stern of a ship, often resembling the tail of a rooster. Besides rooster tails, aplustra sometimes took the form of a goose or swan's head, which is why they were also known as anserculum (Latin: anserculus) – little goose. Aplustra, like the hull, were brightly painted. Homer, for example, referred to Odyssey fleet as "red-cheeked" (Homer, Iliad, II, v. 637) and "Black" (Homer, Iliad, II, v. 644; 652).
During the battle, aplustr was defended as fiercely as the banner of the century, which in fact was the ship. Aplustras were often taken as war trophies. This is also reported by Juvenal: "... and the banner of the defeated trireme " (Juv., 10, 134-136).
Castrum, Trireme, Sternpost, History of the Republican Fleet of ancient Rome