Nemanthias bicolor (Randall, 1979)
Bicolor anthias
photo by Randall, J.E.

Family:  Anthiadidae (Fairy basslets or Streamer basses)
Max. size:  13 cm TL (male/unsexed)
Environment:  reef-associated; marine; depth range 5 - 68 m
Distribution:  Indo-Pacific: Mauritius to the Hawaiian and Line islands, north to the Ryukyu Islands (Ref. 559), south to the Loyalty Islands; Marshall and Caroline islands in Micronesia.
Diagnosis:  Dorsal spines (total): 10-10; Dorsal soft rays (total): 16-18; Anal spines: 3-3; Anal soft rays: 7-8. Male has two yellow-tipped filaments heading the dorsal fin that are used for display (Ref. 48635). Description: Characterized by having upper half yellow orange color and lower half lavender pink; greatest depth of body 2.7-3.1 in SL; thickened and slightly pointed front of upper lip of male; prolonged third dorsal spine of adult female; very elongates second and third dorsal spines; lunate caudal fin with filamentous tips (Ref. 90102).
Biology:  Relatively uncommon inhabitant of lagoon patch reefs and outer reef slopes. Found in deep coastal to outer reef slopes, in current prone areas (Ref. 48635). Benthopelagic (Ref. 58302). It occurs in small groups above coral outcrops or near crevices or ledges.
IUCN Red List Status: Least Concern (LC); Date assessed: 10 March 2015 Ref. (130435)
Threat to humans:  harmless


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