🐠 Blue Devil Damsel (Chrysiptera cyanea)
A Vivid Blue Body With a Yellow-Orange Snout on Males • A Striking Stress-Colour Change • One of the Hardiest Damselfish Available
 
📋 The Blue Devil Damsel, also known as the Sapphire Devil, Blue Damselfish, or Orangetail Blue Damsel, has a vivid, deep blue body. Males develop a bright yellow-orange snout that can extend onto the chest, fins, and tail, while females and juveniles stay almost entirely blue, typically showing a small black spot at the base of the dorsal fin. A striking natural ability: this species can rapidly darken to an almost black colour in response to stress or external stimuli.
It comes from a vast range across the Indo-West Pacific, from the eastern Indian Ocean and Western Australia to New Guinea, the Solomon and Mariana Islands, Indonesia, the Philippines, Taiwan, and the Ryukyu Islands, inhabiting densely coral-rich lagoons, reef flats, and inshore reefs. Every Blue Devil Damsel we ship is feeding well.
This is one of the hardiest, most widely available damselfish in the hobby. It's a bold, feisty little fish that will defend its territory fiercely, even against much larger tankmates, so it's best added later in your stocking order rather than as one of the first fish. It's fully reef safe and won't harm corals or invertebrates. It reaches up to 8.5cm, so a 115L tank suits it well.
 
💡 Highlights
🎨 Vivid Blue With Yellow-Orange Male Accents: Striking sexual dimorphism between males and females
⚫ Stress-Colour Change: Can rapidly darken to almost black
💪 One of the Hardiest Damsels: Extremely resilient and widely available
⚠️ Bold and Territorial: Best added later in your stocking order
🌿 Fully Reef Safe: Won't harm corals or invertebrates