What are facts about damselfish?

Damselfish are small, brightly colored reef fish belonging to the family Pomacentridae, with over 300 species found in tropical and subtropical oceans worldwide. They are known for their territorial behavior, often defending their nesting sites aggressively against intruders. Damselfish play a crucial role in coral reef ecosystems by helping to maintain algae levels, which can promote coral health. Additionally, they exhibit fascinating social behaviors, including the formation of hierarchies within their groups.