Dichichthys

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]

Dichichthys
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

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)