Dragon Age Corrections

By 129 ᴀᴄ, Tessarion was of fighting size.[1] During the Dance of the Dragons, she was the youngest dragon of fighting weight belonging to Aegon II Targaryen's supporters,[3] meaning she was younger than Vhagar, Dreamfyre, and Sunfyre. By 130 ᴀᴄ, Tessarion was one-third in size to Vermithor.[1] A young dragon at the time, Tessarion was nimble in the air.[1] 

in 129 ᴀᴄ. At Rook's Rest, Aegon II, his Hand of the King Ser Criston Cole, and his brother Prince Aemond, lured Princess Rhaenys Targaryen into a trap. Sunfyre and Aemond's dragon Vhagar faced Rhaenys's dragon Meleys in battle, and although the older, cunning and battle-experienced Meleys might have stood a chance against Vhagar alone, the combined forces of Vhagar and Sunfyre were too much. The three dragons battled a thousand feet above the fields. At one point, Meleys managed to closed her jaws around Sunfyre's neck, but Vhagar fell upon them from above, causing the three dragons to fall to the earth. Although Vhagar and Sunfyre emerged victorious from the fight, Sunfyre was grievously wounded in the battle, as one wing had been half torn from his body during the fight.[1]

Because dragons never stop growing as they age, Meleys was apparently one of the eldest and largest dragons during the Dance of the Dragons. Vhagar, last of the original three Targaryen dragons, easily overpowered Arrax - a juvenile dragon who had only recently grown large enough to carry a rider. Even Caraxes faced a tough fight against Vhagar. In contrast, it was believed that in a one on one fight, Vhagar would have a difficult time fighting Meleys.[1]