• Acanthodiscus remorae MacCallum, 1916 accepted as Dionchotrema remorae (MacCallum, 1916) Johnston & Tiegs, 1922 accepted as Dionchus remorae (MacCallum, 1916) Price, 1938
• Allobenedenia convoluta (Yamaguti, 1937) Yamaguti, 1963
• Allobenedenia conyoluta (Yamaguti, 1937) in Egorova (1997) accepted as Allobenedenia convoluta (Yamaguti, 1937) Yamaguti, 1963
• Allobenedenia dischizosepta (Suriano, 1975) Bagnato, Bullard & Cremonte, 2017
• Allobenedenia epinepheli (Bychowsky & Nagibina, 1967) Yang, Kritsky & Sun, 2004
• Allobenedenia epinepheli Yamaguti, 1968 accepted as Allobenedenia yamagutii (Egorova, 1994) Yang, Kritsky & Sun, 2004
• Allobenedenia ishikawae (Goto, 1894) Yamaguti, 1963 accepted as Benedenia ishikawae (Goto, 1894) Monticelli, 1902
• Allobenedenia patagonica (Evdokimova, 1969) Yang, Kritisky & Sun, 2004
• Allobenedenia pedunculata Raju & Rao, 1980
• Allobenedenia pseudomarginata (Bravo-Hollis, 1958) Yang, Kritsky & Sun, 2004
• Allobenedenia sebastodi (Egorova, 1994) Yang, Kritsky & Sun, 2004
• Allobenedenia yamagutii (Egorova, 1994) Yang, Kritsky & Sun, 2004
• Allobenedenia zhangi Yang, Kritsky & Sun, 2004
• Alloencotyllabe caranxi Khalil & Abdul-Salam, 1988
• Allomegalocotyla gabbari Buhrnheim, Gomes & Varela, 1973
• Allomegalocotyla johnstoni (Robinson, 1961) Yamaguti, 1963
• Allometabenedeniella orbicularicola (Gupta & Khanna, 1975) Hussey, 1986
• Allometabenedeniella plataxi Velasquez, 1982
• Allosprostonia tauvinae Lawler & Hargis, 1968 accepted as Allobenedenia epinepheli (Bychowsky & Nagibina, 1967) Yang, Kritsky & Sun, 2004
• Ancyrocotyle bartschi Price, 1934
• Ancyrocotyle vallei (Parona & Perugia, 1895) Parona & Monticelli, 1903
• Armatobenedenia armata (Nitta, 1018) Nitta, 2021
• Benedenia acanthopagri (Hussey, 1986) Whittington, Deveney & Wyborn, 2001 accepted as Tareenia acanthopagri Hussey, 1986
• Benedenia adenea Meserve, 1938 accepted as Neobenedenia adenea (Meserve, 1938) Yamaguti, 1963
• Benedenia akaisaki Iwata, 1990 accepted as Benedenia ovata (Goto, 1894) MacCallum, 1927
• Benedenia akajin Ogawa, Mizuochi, Yamaguchi, Shirakashi, Asai & Agawa, 2021
• Benedenia anadenea Meserve, 1938 accepted as Neobenedenia adenea (Meserve, 1938) Yamaguti, 1963
• Benedenia anticavaginata Byrnes, 1986 accepted as Gracilobenedenia anticavaginata (Byrnes, 1986) Nitta, 2021
• Benedenia armata Nitta, 2019 accepted as Armatobenedenia armata (Nitta, 1018) Nitta, 2021
• Benedenia beverleyburtonae Whittington & Deveney, 2011 accepted as Gracilobenedenia beverleyburtonae (Whittington & Deveney, 2011) Nitta, 2021
• Benedenia bodliani Yamaguti, 1968
• Benedenia convoluta (Yamaguti, 1937) Price, 1939 accepted as Allobenedenia convoluta (Yamaguti, 1937) Yamaguti, 1963
• Benedenia convoluta Bravo-Hollis, 1953 accepted as Allobenedenia pseudomarginata (Bravo-Hollis, 1958) Yang, Kritsky & Sun, 2004
• Benedenia derzhavini (Layman, 1930) Meserve, 1938 accepted as Megalobenedenia derzhavini (Layman, 1930) Egorova, 1994
• Benedenia disciliata Whittington & Deveney, 2011
• Benedenia elegans Diesing, 1858 accepted as Benedenia sciaenae (Van Beneden, 1852) Odhner, 1905
• Benedenia elongata (Yamaguti, 1968)
• Benedenia epinepheli (Yamaguti, 1937) Meserve, 1938
• Benedenia ernsti Deveney & Whittington, 2010
• Benedenia fieldsi Deveney & Whittington, 2010
• Benedenia girellae Hargis, 1955 accepted as Neobenedenia girellae (Hargis, 1955) Yamaguti, 1963
• Benedenia hawaiiensis Yamaguti, 1968
• Benedenia haywardi Deveney & Whittington, 2010
• Benedenia hendorffii (Linstow, 1889) Stiles & Hassall, 1908
• Benedenia hoshinai Ogawa, 1984
• Benedenia humboldti Baeza, Sepúlveda & González, 2019
• Benedenia innobilitata Burnheim, Gomes & Varela, 1973
• Benedenia isabellae Meserve, 1938 accepted as Neobenedenia isabellae (Meserve, 1938) Yamaguti, 1963
• Benedenia ishikawae (Goto, 1894) Monticelli, 1902
• Benedenia jalisciana Bravo-Hollis, 1951
• Benedenia kintoki Iwata, 1990 accepted as Benedenia elongata (Yamaguti, 1968)
• Benedenia kobudai Nitta, 2022
• Benedenia leucanthemum Euzet & Maillard, 1967 accepted as Trimusculotrema leucanthemum (Euzet & Maillard, 1967) Whittington & Barton, 1990
• Benedenia lolo Yamaguti, 1968
• Benedenia lutjani Whittington & Kearn, 1993 accepted as Gracilobenedenia lutjani (Whittington & Kearn, 1993) Nitta, 2021
• Benedenia madai (Ishii & Sawada, 1938) (uncertain > taxon inquirendum)
• Benedenia malaboni Velasquez, 1982 accepted as Menziesia malaboni (Velasquez, 1982)
• Benedenia merinthe (Yamaguti, 1968) Egorova, 1997 accepted as Menziesia merinthe (Yamaguti, 1968) Gibson, 1976
• Benedenia micracantha Euzet & Maillard, 1967 accepted as Trimusculotrema micracantha (Euzet & Maillard, 1967) Whittington & Barton, 1990
• Benedenia monticellii (Parona & Perugia, 1895) Johnston, 1929
• Benedenia muelleri (Meserve, 1938) Meserve, 1939 accepted as Neobenedenia muelleri (Meserve, 1938) Yamaguti, 1963
• Benedenia noblei Menzies, 1946 accepted as Menziesia noblei (Menzies, 1946) Gibson, 1976
• Benedenia orbicularicola Gupta & Khanna, 1976 accepted as Allometabenedeniella orbicularicola (Gupta & Khanna, 1975) Hussey, 1986
• Benedenia ovalis (Yamaguti, 1968) Egorova, 1997 accepted as Menziesia ovalis (Yamaguti, 1968) Gibson, 1976
• Benedenia ovata (Goto, 1894) MacCallum, 1927
• Benedenia pacifica (Guberlet, 1936) Price, 1939 accepted as Pseudoentobdella pacifica (Guberlet, 1936) Yamaguti, 1963
• Benedenia pagrosomi (Ishii & Sawada, 1938) (uncertain > taxon inquirendum)
• Benedenia plataxicola Gupta & Khanna, 1976
• Benedenia pompatica Burnheim, Gomes & Varela, 1973
• Benedenia posterocolpa Hargis, 1955 accepted as Benedeniella posterocolpa (Hargis, 1955) Yamaguti, 1963
• Benedenia rohdei Whittington, Kearn & Beverley-Burton, 1994 accepted as Gracilobenedenia rohdei (Whittington, Kearn & Beverley-Burton, 1994) Nitta, 2021
• Benedenia sargocentron Ding & Zhang in Zhang, Yang & Liu, 2001 accepted as Benedenia hawaiiensis Yamaguti, 1968
• Benedenia scari Yamaguti, 1968
• Benedenia sciaenae (Van Beneden, 1852) Odhner, 1905
• Benedenia sebastodis (Yamaguti, 1938) accepted as Menziesia sebastodis (Yamaguti, 1934) Whittington, Deveney & Wyborn, 2001
• Benedenia sekii (Yamaguti, 1937) Meserve, 1938
• Benedenia seriolae (Yamaguti, 1934) Meserve, 1938
• Benedenia synagris Yamaguti, 1953
• Benedeniella congeri (Yamaguti, 1958) accepted as Benedenia epinepheli (Yamaguti, 1937) Meserve, 1938
• Benedeniella congeri Yamaguti, 1958 accepted as Benedeniella congeri (Yamaguti, 1958) accepted as Benedenia epinepheli (Yamaguti, 1937) Meserve, 1938
• Benedeniella incertae sedis unnithani Gupta & Channa, 1976
• Benedeniella macrocolpa (Lühe, 1906) Johnston, 1929
• Benedeniella posterocolpa (Hargis, 1955) Yamaguti, 1963
• Branchobdella pugetensis (Robinson, 1961) Kearn, Whittington & Evans-Gowing, 2007
• Caballerocotyla abidjani Bussieras & Baudin-Laurencin, 1970 accepted as Capsala biparasitica (Goto, 1894) Price, 1938
• Caballerocotyla albsmithi Dollfus, 1962 accepted as Capsala albsmithi (Dolfus, 1962) Chisholm & Whittington, 2007
• Caballerocotyla andhraensis (Raju & Rao, 1980) accepted as Capsala notosinense (Mamaev, 1968) Chisholm & Whittington, 2007
• Caballerocotyla australis Oliva, 1986 accepted as Capsala gregalis (Wagner & Carter, 1967) Chisholm & Whittington, 2007
• Caballerocotyla auxis Yang, Hu & Ding, 2012 accepted as Capsala auxis (Yang, Hu & Ding, 2012)
• Caballerocotyla biparasitica (Goto, 1894) Price, 1938 accepted as Capsala biparasitica (Goto, 1894) Price, 1938
• Caballerocotyla caballeroi (Winter, 1955) Price, 1960 accepted as Capsala caballeroi Winter, 1955
• Caballerocotyla chilensis Pillai & Pillai, 1976 accepted as Capsala notosinense (Mamaev, 1968) Chisholm & Whittington, 2007
• Caballerocotyla foliacea (Goto, 1894) Price, 1960 accepted as Capsala foliacea (Goto, 1894) Johnston, 1929
• Caballerocotyla gotoi (Yamaguti, 1968) accepted as Capsala magronum (Ishii, 1936) Price, 1938
• Caballerocotyla gouri (Chauhan, 1952) Price, 1960 accepted as Capsala gouri Chauhan, 1951
• Caballerocotyla gregalis Wagner & Carter, 1967 accepted as Capsala gregalis (Wagner & Carter, 1967) Chisholm & Whittington, 2007
• Caballerocotyla katsuwoni (Ishii, 1936) Price, 1960 accepted as Capsala katsuwoni (Ishii, 1936) Price, 1938
• Caballerocotyla klawei Stunkard, 1962 accepted as Nasicola klawei (Stunkard, 1962) Yamaguti, 1968
• Caballerocotyla lenti Mogrovejo & Santos, 2002 accepted as Capsala magronum (Ishii, 1936) Price, 1938
• Caballerocotyla llewelyni Kohn & Justo, 2006 accepted as Capsala katsuwoni (Ishii, 1936) Price, 1938