The longfins, also known as roundheads or spiny basslets, are a family, Plesiopidae, which were formerly placed in the order Perciformes but are now regarded as being incertae sedis in the subseries Ovalentaria in the clade Percomorpha. They are elongated fishes, found in the Indian Ocean and western Pacific Ocean. Classification [[Image:Paraplesiops bleekeri 1.jpg|thumb|Eastern blue devil, Paraplesiops bleekeri]] In some classifications, the genus Notograptus is split in its own family, Notograptidae, but FishBase is followed here. There are two subfamilies within the Plesiopidae and the genera are as follows: Subfamily Acanthoclininae Günther, 1861 Genus Acanthoclinus Jenyns, 1841 Genus Acanthoplesiops Regan, 1912 Genus Beliops Hardy, 1985 Genus Belonepterygion McCulloch, 1915 Genus Notograptus Günther, 1867 Subfamily Plesiopinae Günther, 1861 Genus Assessor Whitley, 1935 Genus Calloplesiops Fowler and Bean, 1930 Genus Fraudella Whitley, 1935 Genus Paraplesiops Bleeker, 1875 Genus Plesiops Oken, 1817 Genus Steeneichthys Gerald R. Allen and Randall, 1985 Genus Trachinops'' Günther, 1861 References Ovalentaria Taxa named by Albert Günther