About Azure Demoiselle
Vivid yellow-and-electric-blue damsel — much more peaceful than its reputation suggests, especially in a larger tank with established territory. Beautiful color contrast against rockwork; hardy under nearly any reef conditions.
Chrysiptera hemicyanea, known commonly as the azure damselfish, azure demoiselle, half-blue demoiselle, and yellow-dipped damsel, is a species of damselfish.
Notes from the editors
What it looks like. Vivid electric blue body with a yellow rear half — the contrast is striking and the fish photographs beautifully. Adult size ~3 inches.
In your tank. Much more peaceful than its damselfish reputation suggests, especially in tanks 50+ gallons with established territories. Holds a small territory but rarely picks fights with non-damsel neighbors.
Care notes. Best added early in the stocking order before more aggressive fish establish territories. Two azures can be kept together in tanks 75+ gallons; pairs are unpredictable. Reef-safe.
Sourcing and feeding. Wild-collected from Indonesian reefs; widely available and inexpensive ($10–20). Hardy and beginner-friendly. Omnivore — pellets, frozen mysis, occasional algae.
Care info is a starting point, not a guarantee. Individual specimens, water chemistry, and tankmate dynamics vary. Verify against multiple sources and adjust to what you observe. See our terms & disclaimers.
Related fish
Sources & attribution
- Taxonomy and accepted name from the World Register of Marine Species (WoRMS AphiaID 276832).
- Description content adapted from Wikipedia, available under CC BY-SA 4.0.
- Photo: Bruxton · CC0 (via iNaturalist or Wikimedia Commons).