Verulux cypselurus (Weber, 1909)
Swallowtail cardinalfish
Schooling cardinalfish,  Black-nosed cardinalfish,  Swallowtail cardinalfish
Verulux cypselurus
photo by Randall, J.E.

Family:  Apogonidae (Cardinalfishes), subfamily: Apogoninae
Max. size:  6 cm TL (male/unsexed)
Environment:  reef-associated; marine; depth range 2 - 15 m
Distribution:  Indo Pacific: East Africa to the Marshall Islands, north to Ryukyu Islands, south to New Guinea. Reported from Tonga (Ref. 53797) and Persian Gulf (Ref. 68964).
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 9-9; Anal spines: 2-2; Anal soft rays: 9-9. Description: Characterized by semi-transparent body with yellowish sheen on head and belly; side of snout with black spot or short stripe; each caudal fin lobe with blackish submarginal band; greatest depth of body 3.8-4.3 in SL (Ref. 90102).
Biology:  Forms large shoals among rocks or above corals of lagoon patch reefs (Ref. 1602). Often schools with R. gracilis (Ref. 37816). Spreads out at night, floating mid-water to catch plankton (Ref. 48635).
IUCN Red List Status: Least Concern (LC); Date assessed: 05 February 2021 Ref. (130435)
Threat to humans:  harmless
Country info:  Known from the vicinity of Tantabiddi Creek, Western Australia (Ref. 7300). Reported from the Territory of Ashmore and Cartier Islands (Ref. 75154). Also known from Ref. 90102.


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