Roundbelly Cowfish (Ostracion roundbelly)

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

Roundbelly Cowfish

Quick facts

Scientific nameOstracion roundbelly
FamilyOstraciidae
Care levelModerate
Reef safetyReef Safe with Caution
TemperamentPeaceful
DietOmnivore
Adult size13 in
Minimum tank size100 gallons
Water parametersTemperature: 75-80°F (24-27°C) pH: 8.0-8.4 Salinity: 1.021-1.025
Feeding scheduleFeed 2-3 times daily

Appearance

Ostracion roundbelly features a flattened, oval body, typically reaching up to 30 cm in length. Its coloring is predominantly brownish-yellow, with a conspicuous white stripe near the tail. Distinctive rounded pectoral fins are also notable.

Diet and feeding

Marine diatoms, microalgae, small crustaceans (such as mysis shrimp), and marine worms (polychaetes) are the food sources for Ostracion roundbelly in both the wild and aquariums.

Difficulty and care for the Roundbelly Cowfish

Moderate - Roundbelly Cowfish requires standard marine aquarium maintenance and intermediate fish keeping skills.

Common health issues

Marine ich, Fin Rot, Swim Bladder Disease, Bacterial Infections, Fungal Infections

Origin and habitat

The Ostracion roundbelly is naturally found in the Indo-Pacific region, primarily along the coastlines of countries such as Indonesia, Thailand, and the Philippines. They inhabit a depth range between 3 to 20 meters.

Log Roundbelly Cowfish 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 Roundbelly Cowfish alongside everything else in your reef.