Why was there a commotion riot between perseus and Phineas?

The commotion between Perseus and Phineas arose from a conflict over Andromeda, whom Perseus had saved from a sea monster and subsequently claimed as his wife. Phineas, Andromeda's former fiancé, felt dishonored and enraged by Perseus's actions. This led to a confrontation where Phineas and his supporters attacked Perseus, resulting in a chaotic battle. Ultimately, Perseus used Medusa's head to turn his opponents to stone, resolving the conflict.