Ostorhinchus hartzfeldii (Bleeker, 1852)
Hartzfeld's cardinalfish
Ostorhinchus hartzfeldii
photo by Randall, J.E.

Family:  Apogonidae (Cardinalfishes), subfamily: Apogoninae
Max. size:  12 cm TL (male/unsexed)
Environment:  reef-associated; marine; depth range 1 - 28 m
Distribution:  Indo-Pacific: Indonesia, Philippines and Palau to Borneo, northwestern Australia and the Arafura Sea (Ref. 9819).
Diagnosis:  Dorsal spines (total): 7-8; Dorsal soft rays (total): 9-9; Anal spines: 2-2; Anal soft rays: 8-8. Juveniles with black stripes and thin white lines. Adults loose black stripes, but have a pupil-sized black peduncular spot and upper white line remains obvious (Ref. 48635). Description: Characterized by purplish brown body color; pair of silver-white stripes from snout through eye; top of head with narrow white stripe; white stripe along upper back to dorsal edge of caudal peduncle; greatest depth of body 2.7-3.0 in SL (Ref. 90102).
Biology:  Benthic and nocturnal species (Ref. 75154) which occurs inshore (Ref. 7300, 75154). Found in small groups among debris or corals of sheltered reef flats and shallow lagoons (Ref. 1602); also among massing long-spined urchins (Ref. 48635).
IUCN Red List Status: Least Concern (LC); Date assessed: 05 February 2021 Ref. (130435)
Threat to humans:  harmless


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