Saltwater Aquarist

Azure Damselfish

(Neopomacentrus azysron)

Azure Damselfish

Species Description…

Scientific Name: Neopomacentrus azysron
Common Name: Azure Damselfish
Species Group: Damselfish
Habitat: Reef Safe
Care Level: Intermediate
Temperament: Semi-aggressive
Diet Type: Herbivore
Role in Aquarium: Community Fish
Max Fish Length: 3 (inches)
Min Aquarium Size: 30 (gallons)
Native Range: Indo-Pacific, including the Philippines, Indonesia, and Papua New Guinea

Overview

  • Found in shallow reefs of the Indo-Pacific, particularly near lagoons and coral heads.
  • Recognized for its vibrant blue body with a yellow underbelly, making it a standout in reef environments.
  • An active swimmer, frequently darting between coral branches for shelter and exploration.
  • Often found in small social groups, establishing a natural hierarchy among its peers.

Feeding

  • Omnivorous, consuming plankton, algae, and tiny crustaceans in the wild.
  • Thrives on a varied diet including marine pellets, frozen mysis shrimp, and spirulina-based foods.
  • Frequent feedings throughout the day support its high energy levels and bright coloration.
  • Providing both plant-based and protein-rich foods ensures a balanced nutritional intake.

Habitat

  • Prefers reef environments with plenty of coral cover and rocky formations.
  • Frequently seeks shelter among branching corals to retreat from larger fish.
  • Moderate water movement is ideal, mimicking its natural reef habitat.
  • Thrives in well-structured aquariums with stable water conditions.

Fish Care

  • Optimal water temperature: 75-82°F (24-28°C).
  • pH level: 8.1-8.4, with a specific gravity of 1.023-1.026.
  • Consistent water quality and routine maintenance help support long-term health.
  • Regular water changes and proper filtration minimize waste buildup and maintain clarity.

Compatibility

  • Generally peaceful but may become territorial, especially when establishing a home base.
  • Best suited for reef tanks with other active but non-aggressive species.
  • Coexists well in small groups, particularly when introduced at the same time.
  • Avoid housing with overly aggressive fish that may chase or harass it.

Aquarium Behavior

  • Active swimmer, frequently moving between coral formations and open water.
  • Displays curiosity, often exploring every part of the aquarium.
  • Establishes a small territory but generally interacts well with other species.
  • Adapts well to captivity, becoming more confident in a structured environment.