Synopsis of the Grenadier Fishes (Gadiformes; Teleostei) of Taiwan Author Iwamoto, Tomio Section of Ichthyology, California Academy of Sciences, 55 Music Concourse Drive, San Francisco, CA 94118, USA; Author Nakayama, Naohide Laboratory of Marine Biology, Faculty of Science, Kochi University, 2 - 5 - 1 Akebono-cho, Kochi, 780 - 8073, Japan; Author Shao, Kwang-Tsao Research Center for Biodiversity, Academia Sinica No. 128, Sec. 2, Academia Road, Nankang, Taipei 115, Taiwan; Author Table, Hsuan-Ching Ho text Proceedings of the California Academy of Sciences 2015 2015-04-15 62 3 31 126 journal article 299670 10.5281/zenodo.11512126 522b8de7-880d-40ca-803e-aa5a3a05c5f6 0068-547X 11512126 Genus Pseudocetonurus Sazonov and Shcherbachev, 1982 Pseudocetonurus Sazonov and Shcherbachev, 1982:5–6 ( type species Pseudocetonurus septifer Sazonov and Shcherbachev, 1982 by monotypy). DISTINGUISHING FEATURES .— BR 7; V 9 or 10, rarely 8; inner GR-I 13–18 total; pyl. caeca 22–34. Head enlarged, notably broad and deep, preopercle and suborbital bones deep and large; orbit small in adults, proportionally larger in young, diameter 19–31% HL; interorbital width 33–44% HL. Snout high, bluntly pointed, little protruding beyond mouth; mouth large, upper jaw 41–49% HL; chin barbel small, 7–10%; gill opening wide, extending ventrally to below end of maxilla. Spinous ray of 1D smooth proximally, finely serrated distally; abdominal area short, periproct between V and A, closer to V bases. Light organ developed: a small round dermal window between V bases. Head fully scaled except for gular and gill membranes; small, awl-shaped spinules on body scales, no reticulations on anterior field; grooved lateral line scales over trunk present or absent. Teeth small, in narrow band on premaxillary, in single series in dentary. Ground color black to dark brown overall. REMARKS .— This genus is closely similar to Ventrifossa and would likely be categorized in that taxon except for its very dark color, greatly expanded head, and commensurately expanded bones of the opercular series. Only the single species known.