Tyraxes

"When Targaryen fought Targaryen in the civil war called the Dance of the Dragons, an angry mob stormed the Dragonpit, that huge now-ruined vault where Targaryens stabled their beasts. Thousands died, but through sheer numbers and madness, five of the Targaryen dragons lay dead by the morning."

- Pycelle

Tyraxes was a dragon bred by House Targaryen.

Biography
During the Dance of the Dragons, an angry mob of smallfolk stormed the Dragonpit where House Targaryen stabled their dragons. Shrykos was among the five dragons killed, being slain by a mob of attackers.

In the books
In the A Song of Ice and Fire, Tyraxes bound to Prince Joffrey Velaryon, son of Queen Rhaenyra Targaryen, during the Dance of the Dragons.

Princess Rhaenyra Targaryen's three eldest sons (each by Laenor Velaryon) were Jacaerys (born 114 AC), Lucerys (born 115 AC), and Joffrey (born 117 AC). The rival faction at court who supported her stepmother Alicent Hightower and her children spread the accusation that Rhaenyra's three sons were not really Laenor's, but bastards fathered by Harwin Strong. In an effort to confirm that he considered Rhaenyra and her sons the true heirs to the throne, her father King Viserys II decreed that a dragon egg would be put in the cradle of each of the boys, to bond with the dragons that hatched from them. Those who doubted the paternity of Rhaenyra's sons also doubted that the eggs would ever hatch, but they were quickly disappointed, as each of the eggs soon hatched in turn. The hatchlings were named Vermax (bonded with Jacaerys), Arrax (bonded with Lucerys), and Tyraxes (bonded with Joffrey). The exact date each hatched is not known but the last seems to have hatched by no later than about 120 AC.

At the start of the civil war Prince Jacaerys flew north as a messenger on Vermax. 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. Half a dozen men and one woman claimed to have dealt the death blow.