tigrellus, Gobius Nichols [J. T.] 1951:3, Fig. 2 [American Museum Novitates No. 1539; ref. 12905] Bernhard Camp, Idenburg River, Irian Jaya, Indonesia, elevation 75 meters. Holotype: AMNH 18574. Paratypes: AMNH 15096 (9). •Valid, genus uncertain -- (Allen 1991:187 [ref. 21090]). •Incertae sedis -- (Larson 2001:71 [ref. 25522]). •Valid as Pseudogobiopsis tigrella (Nichols 1951) -- (Parenti 2021:347 [ref. 38603]). •Valid as Pseudogobiopsis tigrellus (Nichols 1951) -- (Larson 2009:167 [ref. 30125], Larson et al. 2017:179 [ref. 35338], Allen & Larson 2020:39 [ref. 37851]). Current status: Valid as Pseudogobiopsis tigrellus (Nichols 1951). Oxudercidae: Gobionellinae. Distribution: New Guinea: Mamberamo River system, West Papua (Indonesia). Habitat: freshwater.