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Apogonichthyoides opercularis (Macleay, 1878) Pearlycheek cardinalfish |
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photo by
Randall, J.E. |
| Family: | Apogonidae (Cardinalfishes), subfamily: Apogoninae | |||
| Max. size: | 7 cm SL (male/unsexed) | |||
| Environment: | reef-associated; marine | |||
| Distribution: | Western Central Pacific: endemic to northern Australia. | |||
| Diagnosis: | Dorsal spines (total): 9-9; Dorsal soft rays (total): 10-11; Anal spines: 2-2; Anal soft rays: 9-9; Vertebrae: 24-24. This species is distinguished by the following characters: blackish-tipped first-dorsal fin; brownish bars on body absent, faint darker basicaudal mark in adults; a darkish mid-postocular mark just posterior of preopercular edge; 16 pectoral-fin rays without small darkish spot above axil; 10 soft dorsal-fin rays; 9 soft anal fin rays (Ref. 83499). | |||
| Biology: | Nocturnal species; occurs inshore (Ref. 7300). | |||
| IUCN Red List Status: | Least Concern (LC); Date assessed: 05 February 2021 Ref. (130435) | |||
| Threat to humans: | harmless | |||