Rhabdamia gracilis (Bleeker, 1856)
Luminous cardinalfish
Rhabdamia gracilis
photo by Randall, J.E.

 Family:  Apogonidae (Cardinalfishes), subfamily: Apogoninae
 Max. size:  6 cm TL (male/unsexed)
 Environment:  reef-associated; depth range 3 - 91 m
 Distribution:  Indo-West Pacific: East Africa to the Marshall Islands and New Guinea, north to Japan (Ref. 559), south to northern Australia, including the Arafura Sea (Ref. 9819).
 Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 9-9; Anal spines: 2-2; Anal soft rays: 12-13. This species is distinguished by the following characters: bluish longitudinal stripe on the middle of the body; translucent white or pink, silvery on head and abdomen; caudal peduncle sometimes with a posteriorly placed black spot; characterized further by one or both caudal fin lobes having black tip; greatest depth of body 3.3-3.6 in SL (Ref. 90102).
 Biology:  Inhabits lagoon and coastal reefs, among coral and rocks (Ref. 4329). Lives sympatrically with A. notatus (Ref. 76833). Forms large schools (Ref. 559). Feeds during the day in currents above reefs as well as at night (Ref. 48635).
 IUCN Red List Status: Not Evaluated  (Ref. 96402)
 Threat to humans:  harmless
 Country info:   
 

 Entered by: Capuli, Estelita Emily - 11.06.92
 Modified by: Valdestamon, Roxanne Rei - 27.04.15
 Checked by: Garilao, Cristina V. - 23.01.97

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