Scat (Scatophagus argus)

Fish in the family Scatophagidae. Moderate care. Not Reef Safe.

Quick facts

Scientific nameScatophagus argus

FamilyScatophagidae

Also known asSpotted Scat, Argus Fish, Spotted Butterfish

Care levelModerate

Reef safetyNot Reef Safe

TemperamentSemi Aggressive

Dietomnivore

Adult size12 in

Minimum tank size75 gallons

Water parametersTemperature: 72-82°F pH: 7.8-8.3 Salinity: 1.02-1.025

Feeding schedule2-3 times daily

Appearance

Scats are disc-shaped fish with a flattened laterally compressed body and a distinctively spined dorsal fin. Juveniles display bold vertical black bands on a silver-yellow background; adults become greener with red-orange markings on the dorsal and anal fins.

Diet and feeding

Scats are opportunistic omnivores with a strong herbivorous component. Feed high-quality flaked or pellet foods, supplemented with vegetable matter such as spirulina, blanched spinach, or dedicated herbivore formulations 2–3 times daily.

Difficulty and care for the Scat

Moderate - Can adapt to brackish or marine conditions. Best suited for intermediate aquarists.

Common health issues

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

Origin and habitat

Indo-Pacific from East Africa and Red Sea to Australia, Indonesia, and the Philippines, including brackish estuaries and mangrove areas.

Keeper notes

Brackish to marine species. Can adapt to various salinities. Very hardy. Will eat almost anything including plants.

Log Scat 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 Scat alongside everything else in your reef.

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