Banggai Cardinalfish
Pterapogon kauderni
A small reef-associated cardinalfish endemic to the Banggai Islands in Indonesia. It is known for hovering in loose groups among sheltered inshore habitats and for carrying eggs and young in the mouth.

Identification points
- Silver body with two dark vertical bands, one through the eye and one mid-body
- Long, elongated second dorsal and anal fins with a spiny, angular profile
- Deeply forked caudal fin and a compact, high-bodied cardinalfish shape
Habitat
Shallow protected coastal waters around sea urchins, branching corals, seagrass edges, and sheltered lagoon or reef-flat areas in the Banggai Islands; often close to structure in very calm water.
Bait notes
In the wild it takes tiny prey, so small live or frozen foods such as mysis shrimp, copepods, and finely chopped krill are more relevant than standard angling bait. It is not a typical target for recreational fishing.
Behavior
Uses vertical fins to hold position and picks at small crustaceans and zooplankton. It is a mouthbrooding species, and adults are often seen with a brood pouch full of eggs or juveniles.
Caution
Conservation-sensitive endemic species with heavily pressured wild populations and trade restrictions in many places. Do not harvest without confirming local regulations and CITES or national collection rules.
Fishing notes
This is an aquarium and conservation species, not a game fish. Capture for trade should be avoided or tightly regulated; if observed while snorkeling or diving, use non-contact observation only.