Three Striped Damsel

About this fish

Three Striped Damsel is a reef aquarium fish sold under the shop name “Three Striped Damsel,” with the scientific identity Dascyllus aruanus. This damselfish is typically used to add an active, bright presence to a marine tank, and it often remains closely associated with live rock or branching structure where it can establish territory. Because damsels can be bold and territorial, it’s best considered for tanks where compatible tankmates and enough rockwork are planned from the start.

Features:

• Active swimmer that usually stays near rockwork, making it well-suited for aquascaped reef-style displays
• Damselfish temperament tends to be territorial; choose tankmates carefully to reduce chasing or nipping
• Usually adapts well to common marine diets in aquarium conditions when fed consistently
• Often benefits from stable conditions, since sudden swings in salinity or temperature can stress marine fish
• Enjoys moderate, well-oxygenated water flow and secure hiding spots within live rock
• Can be a long-term centerpiece fish in appropriately sized reef aquariums, with continued attention to compatibility

Specifications:

• Scientific name (verified): Dascyllus aruanus
• Care level (general guidance): Moderate (typical for established marine reef hobbyists)
• Temperament (general guidance): Territorial; may be aggressive toward some tankmates
• Diet (general guidance): Omnivorous—accepts quality marine flake/pellets and frozen foods such as mysis or brine shrimp
• Adult size (general guidance): Up to about 10 cm (about 4 in)
• Temperature (general guidance): ~24–26 °C
• Salinity (general guidance): ~1.020–1.025 SG
• pH (general guidance): ~8.1–8.4
• Alkalinity / Calcium / Magnesium (general guidance): Maintain typical reef levels (e.g., alkalinity around ~8–12 dKH; calcium roughly ~400–450 ppm; magnesium roughly ~1250–1350 ppm)