Paracheilinus mccoskeri Randall & Harmelin-Vivien, 1977
McCosker's flasher
Paracheilinus mccoskeri
photo by Tanaka, H.

Family:  Labridae (Wrasses)
Max. size:  8 cm TL (male/unsexed)
Environment:  reef-associated; marine; depth range 5 - 50 m
Distribution:  Indo-West Pacific: western Indian Ocean to Fiji. Questionable record from Indonesia (Ref. 8631).
Diagnosis:  Only the first dorsal soft ray prolonged in adults; penultimate dorsal soft ray of males 1.6-2.0 in HL; a single short dark stripe beneath pectoral fin (Ref. 41634).
Biology:  Inhabits outer reef slopes, over rubble, algae, or coral (Ref. 9710). Occurs in small groups of mix sexes but females outnumber males greatly (Ref. 48636). Swim close to the bottom and females swim in small groups. Males swim around them and often hurry from one area to another where there are groups of females. Some juveniles are secretive and often single or small groups amongst the rubble (Ref. 48636).
IUCN Red List Status: Least Concern (LC); Date assessed: 25 March 2009 Ref. (130435)
Threat to humans:  harmless


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