Pseudamiops gracilicauda (Lachner, 1953)
Graceful-tailed cardinalfish
Pseudamiops gracilicauda
photo by Randall, J.E.

Family:  Apogonidae (Cardinalfishes), subfamily: Pseudamiinae
Max. size:  5 cm TL (male/unsexed)
Environment:  reef-associated; marine; depth range 5 - 30 m
Distribution:  Indo-Pacific: Chagos Islands to the Hawaiian Islands, north to Ryukyu Islands, south to the Great Barrier Reef and Rapa.
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 8-8; Anal spines: 2-2; Anal soft rays: 7-8. Description: Characterized by larval appearance; body slender; base of caudal fin long; semi-transparent body appearance with visible red vertebral column; thin cycloid scales, easily lost; greatest depth of body 4.1-5.6 in SL (Ref. 90102).
Biology:  Nocturnal species (Ref. 7300). Found in caves and among corals of lagoon and seaward reefs (Ref. 1602). Secretive, feeds on zooplankton well above bottom at night (Ref 90102).
IUCN Red List Status: Least Concern (LC); Date assessed: 17 August 2023 Ref. (130435)
Threat to humans:  harmless


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