🐠 Four Stripe Damselfish (Dascyllus melanurus)
Marine Reef-Safe Damselfish • Bold Black & White Striping • Genuine Adult Aggression • Beginner-Hardy But Please Read First
 
📋 The Four Stripe Damselfish (Dascyllus melanurus), also known as the Blacktail Dascyllus or Blacktail Humbug, has a shimmering silver body crossed by three thick black vertical bands, with a fourth black band running along the tail base — a bold, unmistakable pattern.
Native to coral-rich reef slopes across the Western Pacific, this species naturally shoals in large groups, sheltering among branching coral heads for protection.
We want to be genuinely direct: this species quickly grows from a cute, compact size into a genuinely assertive adult that won't hesitate to harass tank mates several times its own size, and it's best kept with other robust, confident fish rather than timid species. Keeping a small group can sometimes help spread out territorial behaviour, though this isn't guaranteed to eliminate aggression entirely — if keeping more than one, introduce them all simultaneously for the best chance of a stable outcome. It's also worth introducing this species early, before more delicate fish are already established, or planning around genuinely robust tank mates from the outset.
Despite this, it's genuinely one of the hardiest, easiest marine fish available, and fully reef safe toward corals and invertebrates.
 
⚫⚪ Highlights
🎨 Bold Black & White Striping: Iconic, unmistakable pattern
⚠️ Genuine Adult Aggression: Becomes assertive with growth; best with robust tank mates
🧠 Extremely Hardy: Tolerant of a wide range of conditions
🌿 Reef Safe: Won't harm corals or invertebrates
🐟 Naturally Social: Can be kept in a group if all introduced together