Aegon II's Sunfyre proved to be as formidable as the great Balerion in House of the Dragon than Rhaenyra's Syrax.
As for the Blacks, "we have Syrax, Caraxes and Meleys. Your sons have Vermax, Arrax and Tyraxes. Baela has Moondancer...There are also unclaimed dragons. Seasmoke still resides on Driftmark.