Horn-nosed Boxfish (Ostracion horn)

Fish in the family Ostraciidae. Hard care. Not Reef Safe.

Horn-nosed Boxfish

Quick facts

Scientific nameOstracion horn
FamilyOstraciidae
Care levelHard
Reef safetyNot Reef Safe
TemperamentSemi Aggressive
Dietomnivore
Adult size9 in
Minimum tank size75 gallons
Water parametersTemperature: 72-78°F pH: 8.1-8.3 Salinity: 1.02-1.025
Feeding scheduleFeed 2-3 times daily

Appearance

The Horn-nosed Boxfish has a distinctive cubic body shape with a yellowish to olive coloration and a characteristic horn-like projection above each eye. The body is covered in a bony carapace with visible polygonal plates, and darker spots or saddles may appear on the sides.

Diet and feeding

Seaweed, marine algae, small crustaceans (e.g., mysid shrimp)

Difficulty and care for the Horn-nosed Boxfish

Moderate - Horn-nosed Boxfish requires standard marine aquarium maintenance and intermediate fish keeping skills.

Common health issues

Marine ich, Fin Rot, Swim Bladder Disorder, Hole-in-the-Head Disease, Columnaris Disease

Origin and habitat

Indo-Pacific region, from the Red Sea and East Africa to Hawaii and the Great Barrier Reef.

Log Horn-nosed Boxfish 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 Horn-nosed Boxfish alongside everything else in your reef.