After Dyer & Chernoff, 1996, with Recent species from Froese & Pauly, 2001- [“The Fishbase”]

<==o Phallostethidae (kurkkusiitinkalat)
   |-- Dentatherina merceri Patten & Ivantsoff, 1983 [Dentatherininae, Dentatherinidae Patten & Ivantsoff, 1983, Deltatherinidae lapsus calami] (Mercer's tusked silverside)
   `--o Phallostethinae Regan (kurkkusiitinkalat)
      |--o Gulaphallus Herre [Gulaphallini Aurich] [5]
      |  |-- G. bikolanus (Herre, 1926)
      |  |-- G. eximius Herre, 1925
      |  |-- G. falcifer Manacop, 1936
      |  |-- G. mirabilis Herre, 1925
      |  `-- G. panayensis (Herre, 1942)
      `--o Phallostethini Regan (Kurkkusiitinkalat)
         |--o Neostethus Regan [Ceratostethus, Plectrostethus, Solenophallus] [Neostethini] [10]
         |  |-- N. amaricola (Villadolid & Manacop, 1934)
         |  |-- N. bicornis Regan, 1916
         |  |-- N. borneensis Herre, 1940
         |  |-- N. ctenophorus (Aurich, 1937)
         |  |-- N. lankesteri Regan, 1916
         |  |-- N. palawanensis (Myers, 1935)
         |  |-- N. robertsi Parenti, 1989
         |  |-- N. thessa (Aurich, 1937)
         |  |-- N. villadolidi Herre, 1942
         |  `-- N. zamboangae Herre, 1942
         `--+--o Phallostethus Regan [Phallostethini] [N: 1] [FB: 2]
            |  |-- P. dunckeri Regan, 1913
            |  `-- P. lehi Parenti, 1996
            `--o Phenacostethus Myers [Phenacostethini] [3 species]
               |-- P. posthon Roberts, 1971
               |-- P. smithi Myers, 1928 (Smith's priapium fish)
               `-- P. trewavasae Parenti, 1986

After Nelson, 1994

<==o Phallostethidae
   |--o Gulaphallinae
   |  `-- Gulaphallus
   `--o Phallostethinae
      |--o Neostethini
      |  `-- Neostethus [Ceratostethus, Plectrostethus, Solenophallus]
      `--+--o Phallostethini
         |  `-- Phallostethus
         `--o Phenacostethini
            `-- Phenacostethus

Reference(s):