Hollandichthys Eigenmann [C. H.] 1909:257 Masc. Tetragonopterus multifasciatus Eigenmann & Norris 1900. Type by monotypy. Type species mentioned on p. 374. Also published in Eigenmann 1010:432 [ref. 1224] with type. •Synonym of Pseudochalceus Kner 1863, but a valid subgenus -- (Zarske & Géry 2006:39 [ref. 28750]). •Valid as Hollandichthys Eigenmann 1909 -- (Weitzman et al. 1986:343 [ref. 5984], Oyakawa in Reis et al. 2003:134 [ref. 27061], Mirande 2009:7 [ref. 30267] in Characidae, Bramocharax clade, Román-Valencia et al. 2010:99 [ref. 30945] as Hollandicthys, Thomaz et al. 2010:1347 [ref. 31210], Mirande 2010:496 [ref. 31006] in Characidae, Pseudochalceus clade, Malabarba et al. 2012:48 [ref. 31810], Bertaco & Malabarba 2013:767 [ref. 33026], Bertaco et al. 2016:413 [ref. 34561], Bertaco 2022:102 [ref. 40102], Melo et al. 2024:26 [ref. 41541] in Thayeriinae). Current status: Valid as Hollandichthys Eigenmann 1909. Acestrorhamphidae: Thayeriinae.