Apogon seminigracaudus Greenfield, 2007
Darktail cardinalfish
photo by Allen, G.R.

Family:  Apogonidae (Cardinalfishes), subfamily: Apogoninae
Max. size:  5 cm TL (male/unsexed)
Environment:  reef-associated; marine; depth range 1 - 30 m
Distribution:  Western Pacific: Japan south to Indonesia east to Fiji.
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 9-9; Anal spines: 2-2; Anal soft rays: 8-8. Characterized by having dorsal fin rays VI-I, 9; anal fin rays II,8; pectoral fin rays 14; pelvic fin rays I, 5; pored lateral line scales 24; predorsal scales 6; circumpeduncular scales 12 (Ref. 93839). Further characterized by semi-transparent red color; caudal peduncle with broad blackish stripe midlaterally, extending onto lower half of caudal fin; greatest depth of body 2.8-3.1 in SL (Ref. 90102).
Biology:  Solitary and secretive, found in patch or fringing reefs near shore, often in silty conditions (Ref 90102).
IUCN Red List Status: Least Concern (LC); Date assessed: 14 August 2023 Ref. (130435)
Threat to humans:  harmless


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