The Asgard fleet employs no strikecraft but makes up for the lack thereof with superior anti-fighter weaponry on various ships and structures and a notable advantage in mobility. While they may not have dramatically more shield points than other races, their shields are superior in mitigation factors and mitigation build-up, with multiple research entries for improvements.
Asgard vessels and structures have low hull point scores but all have shield points.
They are also able to build Space Gates that allow near instant travel between planets, allowing them to easily shift their fleet resources as needed. Ancient capital ships are immensely powerful and include the fabled Atlantis city ship. You will have a fraction of the number of ships in your fleet but many of them are more comparable in power to a capital ship for other races than to a frigate.