callainus, Pomacentrus Randall [J. E.] 2002:169, Figs. 1-2 [aqua, Journal of Ichthyology and Aquatic Biology v. 5 (no. 4); ref. 26194] Hakaumama'o Reef, Tongatapu, Tonga, depth 3 meters. Holotype: BPBM 37982. Paratypes: AMS I.41138-001 (1); BPBM 11350 (1), 37970 (1); CAS 214537 (1); MNHN 2002-0092 (1); NSMT-P 63012 (1); ROM 48677 (18); USNM 367494 (1); WAM P.31905.001 (1). Type catalog: Moore et al. 2008:34 [ref. 30117]. •Valid as Pomacentrus callainus Randall 2002 -- (Allen & Wright 2003:136 [ref. 27247], Randall et al. 2004:21 [ref. 27624], Randall 2005:378 [ref. 28239], Parenti 2021:74 [ref. 38418]). Current status: Valid as Pomacentrus callainus Randall 2002. Pomacentridae: Pomacentrinae. Distribution: South Pacific: Fiji and Tonga. Habitat: marine.