Small Cardinalfish (Apogon parvulus)

Fish in the family Apogonidae. Moderate care. Reef Safe.

Small Cardinalfish

Quick facts

Scientific nameApogon parvulus
FamilyApogonidae
Care levelModerate
Reef safetyReef Safe
TemperamentPeaceful
Dietcarnivore
Adult size3.5 in
Minimum tank size20 gallons
Water parametersTemperature: 72-78°F pH: 8-8.3 Salinity: 1.02-1.025
Feeding schedule2-3 times daily

Appearance

Apogon parvulus is a small, slender cardinalfish with a reddish-orange to deep red coloration throughout its body. It has two dorsal fins, large eyes characteristic of nocturnal species, and a slightly compressed body shape. A faint dark stripe may run through the eye region.

Diet and feeding

Feed small meaty foods such as mysis shrimp, copepods, and finely chopped marine flesh. In captivity, it readily accepts frozen foods; offer small portions 2–3 times daily to match its natural nocturnal feeding behavior.

Difficulty and care for the Small Cardinalfish

Small Cardinalfish are moderately hardy once established, but require careful acclimation and stable water conditions. Their nocturnal nature and tendency to hide make them less visible than many reef fish, and they may take time to adjust to captive feeding routines.

Common health issues

Ich, bacterial infections, parasitic infections

Origin and habitat

Indo-Pacific region, including the Great Barrier Reef and surrounding coral reef systems from Indonesia to Australia and the Philippines.

Log Small Cardinalfish 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 Small Cardinalfish alongside everything else in your reef.