Pycnochromis abruptus (Randall, 2001)
Pycnochromis abruptus
photo by Randall, J.E.

Family:  Pomacentridae (Damselfishes), subfamily: Chrominae
Max. size:  5.36 cm SL (male/unsexed)
Environment:  reef-associated; marine; depth range 0 - 22 m
Distribution:  Eastern Central Pacific: endemic to Marquesas.Islands.
Diagnosis:  Dorsal spines (total): 12-12; Dorsal soft rays (total): 11-13; Anal spines: 2-2; Anal soft rays: 11-12; Vertebrae: 26-26. Body very dark gray-brown, depth 1.95-2.1 in SL. Caudal fin abruptly white. Narrow posterior part of dorsal and anal fins hyaline. Base of pectoral fins with a large black spot. Upper and lower spiniform procurrent caudal rays 2; upper and lower 2 branched caudal rays filamentous and often very long. Tube lateral line scales 16-18, rarely 16. Free margin of subopercle nearly reaching a vertical at rear margin of pupil.
Biology:  A shallow water species. Feeds on planktons (Ref. 89972). Diurnal species (Ref. 54980). Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).
IUCN Red List Status: Least Concern (LC); Date assessed: 16 November 2010 Ref. (130435)
Threat to humans:  harmless


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