Immaculate Damsel
Mecaenichthys immaculatus
Immaculate Damsel (Mecaenichthys immaculatus) is a small, reef-associated damselfish from the southwestern Pacific. It is not a standard game fish and is usually encountered by divers or collected incidentally rather than targeted by anglers.

Identification points
- Small damselfish with a plain, unpatterned body and no bold bars or spots
- Typically dusky to brownish overall with a subtly paler belly
- Compact, oval body with a continuous dorsal fin typical of damselfish
Habitat
Shallow rocky reefs and coral-algal areas, especially sheltered inshore reef slopes and tide pools around southern Australia and nearby temperate coastal reefs.
Bait notes
Rarely targeted; small bits of shrimp, mysid, or marine worm on fine tackle may take it if legally retained. Tiny soft plastics or small flies can attract it, but it is generally not an angling species.
Behavior
A small territorial reef fish that stays close to structure and feeds on tiny algae, zooplankton, and benthic scraps. It is wary and quick to dart back into cover when disturbed.
Caution
Handle carefully around reef habitat to avoid finning injuries and not damage fragile reef cover. Check local rules before keeping any specimen; it is not a common recreational catch.
Fishing notes
If encountered, fish very light line and small hooks around reef edges, kelp, and surge channels. Short casts and delicate presentations work best; most anglers should simply observe rather than target it.