Blueblotch Butterflyfish (Chaetodon plebeius)

Fish in the family Chaetodontidae. Moderate care. Reef Safe with Caution.

Blueblotch Butterflyfish

Quick facts

Scientific nameChaetodon plebeius
FamilyChaetodontidae
Care levelModerate
Reef safetyReef Safe with Caution
TemperamentSemi Aggressive
Dietomnivore
Adult size5.5 in
Minimum tank size75 gallons
Water parametersTemperature: 72-78°F pH: 8.1-8.3 Salinity: 1.02-1.025
Feeding schedule2-3 times daily

Appearance

The Blueblotch Butterflyfish displays a yellow body with distinctive blue patches or blotches, particularly visible on the gill covers and along the flanks. It has the characteristic compressed, disc-like body shape typical of butterflyflies, with small mouth and continuous dorsal fin.

Diet and feeding

In captivity, offer frozen mysis shrimp, small crustaceans, quality marine flakes, and occasional live copepods. Butterflyfish are natural grazers and pick at small crustaceans on live rock, supplementing their dietary needs.

Difficulty and care for the Blueblotch Butterflyfish

Moderate - Requires some experience due to specific dietary water or tank requirements. Best suited for intermediate aquarists.

Common health issues

Ich (Marine Ich), parasitic infections, poor feeding response in captivity, fin rot

Origin and habitat

Indo-Pacific region, ranging from East Africa and the Red Sea through Indonesia and the Philippines to the western Pacific, including waters around Australia and the Great Barrier Reef.

Log Blueblotch Butterflyfish 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 Blueblotch Butterflyfish alongside everything else in your reef.