Dinematichthyini is a

tribe The term tribe is used in many different contexts to refer to a category of human social group. The predominant worldwide usage of the term in English is in the discipline of anthropology. This definition is contested, in part due to confl ...

viviparous brotula The viviparous brotulas form a family, the Bythitidae, of ophidiiform fishes. They are known as viviparous brotulas as they generally bear live young, although there are indications that some species (at least '' Didymothallus criniceps'') do n ...

s, which is conventionally placed within the subfamily

Brosmophycinae Brosmophycinae is a subfamily of the viviparous brotulas. They are divided from the subfamily Bythitinae by having the dorsal fin, caudal fin and anal fin all separate whereas they are joined in the Bythitinae. It is divided into the tribes Din ...

. They are differentiated from the other tribe within that subfamily, the

, by having a single pair of

ossified Ossification (also called osteogenesis or bone mineralization) in bone remodeling is the process of laying down new bone material by cells named osteoblasts. It is synonymous with bone tissue formation. There are two processes resulting in t ...

genital claspers, having an absence or greatly reduced scales on the head and having the posterior end of the

maxillary bone The maxilla (plural: ''maxillae'' ) in vertebrates is the upper fixed (not fixed in Neopterygii) bone of the jaw formed from the fusion of two maxillary bones. In humans, the upper jaw includes the hard palate in the front of the mouth. The t ...

showing a small amount of vertical expansion. A review of the viviparous brotulas carried out in 2016 elevated the tribe to a

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

, the Dinematichthyidae. Abstract

Genera

The following genera are included in the tribe Dinematichthyini: * '' Alionematichthys'' * '' Beaglichthys'' * '' Brosmolus'' * '' Brotulinella'' * '' Dactylosurculus'' * '' Dermatopsis'' * '' Dermatopsoides'' * ''

Diancistrus ''Diancistrus'' is a genus of viviparous brotula The viviparous brotulas form a family, the Bythitidae, of ophidiiform fishes. They are known as viviparous brotulas as they generally viviparity, bear live young, although there are indications ...

'' * '' Didymothallus'' * '' Dinematichthys'' * '' Dipulus'' * '' Gunterichthys'' * ''

Lapitaichthys ''Lapitaichthys frickei'' is a species of viviparous brotula found on reefs around New Caledonia. This species grows to a length of SL. This species is the only known member of its genus. The specific name refers to the ichthyologist Rona ...

'' * ''

Majungaichthys ''Majungaichthys'' is a genus of viviparous brotulas native to the western Indian Ocean. The generic name refers to Majunga in Madagascar where the type was collected. Species There are currently two recognized species in this genus: * '' Ma ...

'' * ''

Mascarenichthys ''Mascarenichthys'' is a genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of bi ...

'' * '' Monothrix'' * ''

Nielsenichthys ''Nielsenichthys pullus'' is a species of viviparous brotula found in Pacific Ocean waters around Indonesia where it occurs at depths of . This species grows to a length of SL. This is the only known species in its genus. References * ...

'' * '' Ogilbia'' * ''

Ogilbichthys ''Ogilbichthys'' is a genus of viviparous brotulas found in the central-western Atlantic Ocean and the Caribbean Sea. he generic name refers to the resemblance of these fish to those in the genus ''Ogilbia'', a name honours the Australian natur ...

'' * '' Paradiancistrus'' * ''

Porocephalichthys The Shaggy cusk (''Porocephalichthys dasyrhynchus'') is a species of viviparous brotula found in reefs around Rottnest Island, Western Australia. This species grows to a length of SL. This is the only known species in its genus. This sp ...

'' * '' Typhliasina'' * ''

Ungusurculus ''Ungusurculus'' is a genus of viviparous brotulas found in the western Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean ...

'' * ''

Zephyrichthys ''Zephyrichthys barryi'' is a species of viviparous brotula found in the Indian Ocean waters around western Australia. This species grows to a length of SL. This species is the only known member of its genus. The etymology of the name is tha ...

References

{{Taxonbar, from=Q21220527 Bythitidae Viviparous fish Fish tribes