Blue Assessor (Assessor macneilli)
Fish in the family Plesiopidae. Moderate care. Reef Safe.
Quick facts
Appearance
A small, vibrant blue fish with a stocky, elongated body. The coloration ranges from deep blue to cobalt with darker blue bands or bars along the body. It has a large head with a distinctly blunt snout and a relatively small mouth positioned anteriorly.
Diet and feeding
Feed small meaty foods including mysis shrimp, copepods, amphipods, and finely chopped marine flesh. In established reefs with natural prey populations, supplemental feeding may be reduced.
Difficulty and care for the Blue Assessor
Moderate difficulty. Blue Assessors require stable water conditions, adequate hiding places, and appropriate small meaty foods. They are shy and do best in established systems with live rock providing shelter and natural food sources.
Common health issues
Parasitic infections (ich), starvation if not adequately fed small prey, bacterial infections from poor water quality
Origin and habitat
Indo-Pacific region, ranging from the Philippines and Indonesia westward to the Great Barrier Reef and the Australian coastal waters. Found in rocky crevices and cave systems of coral reef environments.
Log Blue Assessor in your reef tank
Reef Trak gives you the full record on every species in your tank: acquisition date, source, photos, parameters at time of stocking, and links to maintenance and feeding events. Track Blue Assessor alongside everything else in your reef.
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