praecox, Rhombatractus Weber [M.] & de Beaufort [L. F.] 1922:298 [Fishes Indo-Australian Archipelago v. 4; ref. 4598] Pionierbivak, Mamberamo River, northern New Guinea. Lectotype: ZMA 103142. Paralectotypes: CSIRO B 1196 [ex ZMA 103142] (12); NMBA 3102 [ex ZMA] (1); RMNH 23222 (3); CAS-SU (4, missing or not received); ZMA 103051 (35), 110165 (20). Type catalog: Hoedeman 1960:216 [ref. 19258] including exchanges from ZMA, Nijssen et al. 1982:77 [ref. 19236], Kottelat & Sutter 1988:55 [ref. 13796]. Lectotype selected by Hoedeman 1960:216 [ref. 19258]. •Valid as Melanotaenia praecox (Weber & de Beaufort 1922) -- (Allen 1991:95 [ref. 21090], Allen et al. 2015:854 [ref. 33735]). Current status: Valid as Melanotaenia praecox (Weber & de Beaufort 1922). Melanotaeniidae. Distribution: Mamberamo River system, Irian Jaya, Indonesia. Habitat: freshwater.