Bangai Cardinal Fish (Pterapogon kauderni)

A peaceful, striking, and highly recognizable reef fish, the Bangai Cardinal is an excellent addition to most marine aquariums. With its bold black stripes, silver body, and elegant extended fins, this species brings calm movement and strong visual appeal to any reefscape.

Key Features

Peaceful temperament – Safe with corals and most invertebrates.

Reef-safe – Does not nip corals or disturb the aquarium structure.

Distinctive appearance – Contrasting black and white patterning and long finnage.

Captive-bred availability – Many individuals on the market are tank-bred, making them hardier and easier to acclimate.

Low to moderate activity – They prefer to hover calmly among rockwork rather than swim long distances.

Care Requirements

Tank size: 120 litres or larger

Diet: Frozen foods (mysis, brine shrimp), enriched small meaty foods; adapts to pellets over time

Temperament: Usually peaceful; males may show mild territorial behaviour

Reef compatibility: Excellent

Ideal environment: Calm flow areas, hiding spots among rockwork or branching corals

Additional Notes

Bangai Cardinals are one of the few marine fish that display paternal mouthbrooding. With stable conditions and a compatible pair, they may even breed in a home aquarium.

A hardy, beautiful, and iconic species—perfect for both beginner and advanced reefkeepers looking for a peaceful centrepiece fish.