Tyraxes was the dragon bound to Prince Joffrey Velaryon during the Dance of the Dragons. Tyraxes died in the Dragonpit when it was invaded by a half-crazed angry mob after a one-handed prophet called the Shepherd began to rant against all dragons everywhere. Tyraxes was the third dragon to die in the pit.
Tyraxes retreated into his lair roasting every would-be dragon slayer as they rushed after him. His entrance was made impassable by the corpses. The mob entered a back entrance instead. The dragon's chain entangled Tyraxes as he turned and was slain.