Ptereleotris uroditaenia
Ptereleotris uroditaenia Randall & Hoese, 1985
Flagtail dartfish
photo by Randall, J.E.


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Family:  Microdesmidae (Wormfishes), subfamily: Ptereleotrinae
Max. size:  10 cm SL (male/unsexed)
Environment:  reef-associated; marine; depth range 18 - 40 m
Distribution:  Western Central Pacific: Indonesia to the Solomon Islands and Australia.
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 26-26; Anal spines: 1-1; Anal soft rays: 24-24; Vertebrae: 26-26. Pale bluish in life. Chin with a median longitudinal fold. Scales tiny, closely packed, non imbricate except posteriorly on caudal peduncle. 1st dorsal higher than 2nd fin; rays of 3rd to 5th spines very long and filamentous. Pale markings on head. Named uroditaenia (Greek) in reference to the 2 dark bands on the caudal fin.
Biology:  Inhabits protected sand and rubble bottoms (Ref. 9710). Solitary or in small groups (Ref. 90102). Usually away from reefs at moderate depth (Ref. 48637).
IUCN Red List Status: Least Concern (LC); Date assessed: 13 March 2015 Ref. (130435)
Threat to humans:  harmless


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