Dascyllus Aruanus (The Whitetail Damselfish)

Overview

• Native to the Indo-Pacific, commonly found in coral reefs, lagoons, and rocky coastal areas.
• Identified by its striking black and white striped pattern, making it easily recognizable.
• A hardy and adaptable species, often forming small groups around coral formations.
• Can be territorial, particularly as it matures, requiring thoughtful tankmate selection.
• Best suited for aquariums with stable water conditions, live rock structures, and plenty of swimming space.

Feeding

• Omnivorous, feeding on plankton, algae, and small invertebrates in its natural habitat.
• Thrives on a varied diet including high-quality marine flakes, frozen mysis shrimp, and brine shrimp.
• Readily accepts prepared foods but benefits from occasional live or frozen food supplementation.
• Should be fed multiple times daily to sustain energy levels and support growth.
• A well-balanced diet enhances coloration and maintains overall health.

Habitat

• Prefers reef-associated environments with moderate to strong water flow.
• Often found schooling near coral heads and rocky crevices, where they establish territories.
• Aquarium setups should include live rock for shelter and plenty of open swimming areas.
• Requires stable water parameters and efficient filtration for long-term success.
• Providing shaded areas and structured environments encourages natural behavior.

Fish Care

• Optimal water temperature: 74-80°F (23-27°C) to maintain health and activity.
• Preferred pH range: 8.1-8.4, with a salinity level of 1.020-1.025.
• Requires frequent water changes and strong filtration to ensure a clean environment.
• Reef-safe but may become aggressive toward smaller tankmates, especially in confined spaces.
• Providing well-structured rock formations helps reduce aggression by establishing territories.

Compatibility

• Semi-aggressive, especially as it matures, and best kept with similarly robust fish.
• Compatible with clownfish, wrasses, tangs, and other similarly tempered species.
• Should not be housed with timid or slow-moving fish that may be harassed.
• Best kept in groups of three or more to distribute aggression within the species.
• Providing adequate swimming space and rockwork minimizes territorial disputes.

Aquarium Behavior

• An active swimmer that establishes territories near rock formations and coral heads.
• Frequently seen schooling in groups but may become more aggressive as it matures.
• More confident when provided with adequate space and structured environments.
• Providing a balanced reef environment encourages its natural behavior and social interactions.
• Over time, it may recognize its caretaker and actively engage during feeding sessions.