By Bob Goemans
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Real Reef Rock 


Apogon semiornatus

Peters, 1876

Oblique-banded Cardinalfish

Likely Reef Tank Suitable

Likely Fish-Only Tank Suitable

Range: Indo-West Pacific Ocean: Red Sea and Gulf of Oman south to Natal, South Africa, east to Australia, and north to Southern Japan.

Size: 3 inches (7 cm)

Natural Environment: Inhabits caves in coastal rocky reefs, and usually found at depths between 15 – 100 feet (5 – 30 m) where it feeds on small fishes and crustaceans/zooplankton during evening hours.

General Husbandry: Has a transparent pinkish body with a single wide reddish brown from the snout to the caudal peduncle, and a second shorter band on the middle body. As of 2016, not yet purposely collected for the trade.


    Order: Perciformes

    Suborder: Percoidei

    Family: Apogonidae

    Subfamily: Apogoninae

    Genus: Apogon

FYI: Shown here for identification only.

 Apogon semiornatus (Oblique-banded Cardinalfish)
Photo © John Randall
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