arenarius, Pomacentrus Allen [G. R.] 1987:9, Fig. 1 [Memoirs of the Museum of Victoria v. 48 (no. 1); ref. 17639] Escape Reef, Great Barrier Reef, Queensland, Australia, 15°50'S, 145°50'E, depth 15 meters. Holotype: WAM P.27465-001. Paratypes: AMS I.26319-001 (1); BPBM 30942 (1); WAM P.24940-001 (1), P.25107-008 (2), P.25371-004 (2), P.27461-004 (1), P.28161-002 (1). Type catalog: Hutchins & Smith 1991:30 [ref. 19335], Moore et al. 2008:33 [ref. 30117]. •Valid as Pomacentrus arenarius Allen 1987 -- (Allen & Swainston 1988:106 [ref. 25477]). •Synonym of Pomacentrus nagasakiensis Tanaka 1917 -- (Randall et al. 1990:279 [ref. 15987], Allen 1991:250 [ref. 19344], Fricke & Kulbicki 2006:341 [ref. 28867], Allen et al. 2006:1466 [ref. 29090], Parenti 2021:76 [ref. 38418]). Current status: Synonym of Pomacentrus nagasakiensis Tanaka 1917. Pomacentridae: Pomacentrinae. Habitat: marine.