Dichichthys

Dichichthys
Parmaturus bigus
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Division:	Selachii
Order:	Carcharhiniformes
Suborder:	Carcharhinoidei
Family:	Dichichthyidae White, Stewart, O'Neill & Naylor, 2024
Genus:	Dichichthys W. L. Chan, 1966
Species
See text

Dichichthys is a genus of sharks which is the only genus in the monotypic family Dichichthyidae, the bristle sharks. These sharks are found in the Western Pacific Ocean. Until recently, scientists believed these 5 species were part of the genus Parmaturus, until morphological testing confirmed its placement in its own family. Supraorbital crests on the chondrocranium also distinguish Dichichthys from other catshark genera/families. ^[1]

Species

Dichichthys contains the following five recognised valid species: ^[2]

• Dichichthys albimarginatus (Séret & Last, 2007) (Whitetip bristle shark)
• Dichichthys bigus (Séret & Last, 2007) (Beige bristle shark)
• Dichichthys melanobranchus (W. L. Chan, 1966) (Blackgill catshark)
• Dichichthys nigripalatum (Fahmi & Ebert, 2018) (Indonesian filetail catshark)
• Dichichthys satoi (White, Stewart, O'Neill & Naylor, 2024) (Roughback bristle shark)

References

1. White, William T.; Stewart, Andrew L.; O'Neill, Helen L.; Naylor, Gavin J. P. "Dichichthyidae, a New Family of Deepwater Sharks (Carcharhiniformes) from the Indo–West Pacific, with Description of a New Species". MDPI. Retrieved 28 March 2024.
2. Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Species in the genus Dichichthys". Catalog of Fishes . California Academy of Sciences . Retrieved 25 October 2024.