Hexabothriidae is a family of

monogenea Monogeneans, members of the class Monogenea, are a group of ectoparasitic flatworms commonly found on the skin, gills, or fins of fish. They have a direct lifecycle and do not require an intermediate host. Adults are hermaphrodites, meaning they ...

n parasites. The family name was proposed by Emmett W. Price in 1942.Price, E. W. 1942: North American monogenetic trematodes. V. The family Hexabothriidae n. n. (Polystomatoidea). Proceedings of the Helminthological Society of Washington, 9, 39-56
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The family includes 14-16

genera Genus (; : genera ) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses. In binomial nomenclature, the genus name forms the first part of the binomial s ...

according to authors and about 60 species; all are parasitic on the

gill A gill () is a respiration organ, respiratory organ that many aquatic ecosystem, aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow r ...

s of

chondrichthyan Chondrichthyes (; ) is a class (biology), class of jawed fish that contains the cartilaginous fish or chondrichthyans, which all have skeletons primarily composed of cartilage. They can be contrasted with the Osteichthyes or ''bony fish'', which ...

fishes (

rays Ray or RAY may refer to: Fish * Ray (fish), any cartilaginous fish of the superorder Batoidea * Ray (fish fin anatomy), the bony or horny spine on ray-finned fish Science and mathematics * Half-line (geometry) or ray, half of a line split at an ...

sharks Sharks are a group of elasmobranch cartilaginous fish characterized by a ribless endoskeleton, dermal denticles, five to seven gill slits on each side, and pectoral fins that are not fused to the head. Modern sharks are classified within the ...

and

chimaera Chimaeras are Chondrichthyes, cartilaginous fish in the order (biology), order Chimaeriformes (), known informally as ghost sharks, rat fish (not to be confused with rattails), spookfish, or rabbit fish; the last two names are also applied to B ...

s). Studies on phylogeny of monogeneans based on morphology,Boeger, W. A., & Kritsky, D. C. (2001). Phylogenetic relationships of the Monogenoidea. In D. T. J. Littlewood & R. A. Bray (Eds.), Interrelationships of the Platyhelminthes (pp. 92-102). London & New York: Taylor and Francis molecules or spermatozoa suggest that the Hexabothriidae are a basal group within the

Polyopisthocotylea Polyopisthocotylea is a subclass of parasitic flatworms in the class Monogenea.WoRMS (2023). Polyopisthocotylea. Accessed at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=119220 on 2023-12-21Yamaguti, S. (1963). Systema Helminthum Volu ...

Genera

;According to the World Register of Marine Species Bray, R. (2004). WoRMS (2015). Hexabothriidae Price, 1942. Accessed through: World Register of Marine Species a

on 2015-12-04 *'' Branchotenthes'' Bullard & Dippenaar, 2003 *'' Callorhynchocotyle'' Suriano & Incorvaia, 1982 *'' Dasyoncocotyle'' Hargis, 1955 *'' Epicotyle''

Euzet Euzet (; ) is a commune in the Gard department in southern France. Population See also *Communes of the Gard department *Occitania (administrative region) Occitania ( ; ; ) is the southernmost Regions of France, administrative region ...

& Maillard, 1974 Euzet, Louis & Maillard, Claude, 1974: Les Monogènes Hexabothriidae Price, 1942. Historique, systématique, phylogenèse. Bulletin du Muséum National d'Histoire Naturelle, 3° série, 206, Zoologie 136, 113-141

*'' Erpocotyle'' Van Beneden & Hesse, 1863 *'' Heteronchocotyle'' Brooks, 1934 *'' Hexabothrium'' von Nordmann, 1840 *'' Mobulicola'' Patella & Bullard, 2013 *'' Neonchocotyle'' Ktari & Maillard, 1972 *'' Paraheteronchocotyle'' Mayes, Brooks & Thorson, 1981 ''(omitted in WoRMS but considered valid )'' *'' Pristonchocotyle'' Watson & Thorsen, 1976 *'' Protocotyle''

& Maillard, 1974 (example: ''

Protocotyle euzetmaillardi ''Protocotyle euzetmaillardi'' is a species of monogenean of the family Hexabothriidae. It is the third described species of the genus '' Protocotyle'', after '' Protocotyle grisea'' (Cerfontaine, 1899) Euzet & Maillard, 1974Euzet, L. & Maillar ...

'') *'' Pseudohexabothrium'' Brinkmann, 1952 Brinkmann, A. Jr. 1952. Fish trematodes from Norwegian waters. I. The history of fish trematode investigations in Norway and the Norwegian species of the order Monogenea. Universitetet i Bergen, Årbok. Naturvitenskapelig rekke (1), 1-134. *'' Rajonchocotyle'' Cerfontaine, 1899 Cerfontaine, Paul. 1899: Contribution à l'étude des Octocotylidés. V. Les Onchocotylinae. Archives de Biologie, 16, 345-478 + Plates 18-21. *'' Rhinobatonchocotyle'' Doran, 1953 *'' Squalonchocotyle'' Cerfontaine, 1899

References

{{Taxonbar, from=Q5022001 Polyopisthocotylea Platyhelminthes families