Blackspot Sergeant
Abudefduf sordidus
Blackspot Sergeant is a reef-associated damselfish found in warm Indo-Pacific waters. It lives in shallow coastal reefs and surge channels, where it feeds mainly on algae and small benthic invertebrates.
Identification points
- Deep-bodied damselfish with a rounded profile
- Pale body marked by a dark blotch at the upper base of the tail
- Yellowish to dusky fins with faint vertical body bars in many adults
Habitat
Shallow tropical coral and rocky reefs, reef flats, surge zones, and sheltered lagoons; usually close to structure in clear, warm coastal water.
Bait notes
Not a major target for most anglers. Small hooks with tiny pieces of shrimp, squid, or cut fish can take them; very small soft plastics or micro jigs may also work around reefs.
Behavior
Typically occurs in loose groups or small schools near reef structure. It grazes on algae and picks small invertebrates from the substrate, and can be territorial around its feeding area.
Caution
Handle carefully around reef structure to avoid cuts and punctures; local reef-fish consumption advisories may apply in some areas, and ciguatera risk can be a concern for reef species in tropical regions.
Fishing notes
Fish light tackle close to reef edges, pilings, and rubble with minimal weight. Short, accurate casts and a natural drift are better than heavy presentations; release promptly if not keeping small reef fish.