The phylogenetic relationships of the family Pinguipedidae plus the genus Cheimarrichthys von Haast, 1874, were studied to redefine the family. Based on a phylogenetic analysis using derived characters belonging to 21 transformation series, accepting the monophyly of Pinguipedidae plus Cheimarrichthys provisionally for the operational procedure of the analysis, it was hypothesized that Cheimarrichthys is not closely related to Parapercis Bleeker, 1863, although these genera had been considered as having a close affinity. Although the Pinguipedidae and Cheimarrichthys share nine derived characters, it was determined that these characters are also found in other trachinoid families. In addition, several families, such as the Leptoscopidae, Uranoscopidae, and Trichodontidae, have many more derived characters in common with Cheimarrichthys than the pinguipedids have with that genus. The conclusion drawn here is that it is not parsimonious to recognize the monophyly of the Pinguipedidae and Cheimarrichthys based on these nine derived characters, and that these characters are not compelling enough to link these groups. The redefined Pinguipedidae is proposed to include the following five genera: Parapercis, Prolatilus Gill, 1865, Pinguipes Cuvier, 1829, Pseudopercis de Miranda-Ribeiro, 1903, and Kochichthys Kamohara, 1960. Cheimarrichthys, excluded from the Pinguipedidae, is put into its own family, Cheimarrichthyidae.
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Imamura, H., Matsuura, K. Redefinition and phylogenetic relationships of the family Pinguipedidae (Teleostei: Perciformes). Ichthyol Res 50, 259–269 (2003). https://doi.org/10.1007/s10228-003-0167-5