Pinecone Fish (Monocentris japonica)

Fish in the family Monocentridae. Expert care. Reef Safe.

Quick facts

Scientific nameMonocentris japonica

FamilyMonocentridae

Also known asJapanese Pinecone Fish, Pineapple Fish

Care levelExpert

Reef safetyReef Safe

TemperamentPeaceful

Dietcarnivore

Adult size6 in

Minimum tank size75 gallons

Water parametersTemperature: 72-78°F pH: 8.1-8.3 Salinity: 1.023-1.025

Feeding schedule2-3 times daily

Appearance

Small, stocky fish with a distinctive globular, heavily armored body covered in sharp bony plates arranged like pinecone scales. Coloration is silvery-gray with dark markings; photophores (light organs) line the body.

Diet and feeding

Feed small live or frozen meaty foods such as copepods, amphipods, mysis shrimp, and finely chopped fish. Pinecone fish are specialized microcarnivores and may initially refuse prepared foods; live prey helps acclimation.

Difficulty and care for the Pinecone Fish

Expert - Rare and difficult to feed. Best suited for expert aquarists only.

Common health issues

Marine ich, Fin rot, Swim bladder disorder, Bacterial infections, Parasitic infestations

Origin and habitat

Indo-Pacific region from the Indian Ocean to the western Pacific, including waters off Japan, Australia, and the Philippines.

Keeper notes

Rare but iconic species. Has bioluminescent organs. May be difficult to feed initially. Requires dim lighting.

Log Pinecone Fish 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 Pinecone Fish alongside everything else in your reef.

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