The longfins, also known as roundheads or spiny basslets, are a

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

, Plesiopidae, which were formerly placed in the order

Perciformes Perciformes (), also called the Percomorpha or Acanthopteri, is an order or superorder of ray-finned fish. If considered a single order, they are the most numerous order of vertebrates, containing about 41% of all bony fish. Perciformes means ...

but are now regarded as being ''

incertae sedis ' () or ''problematica'' is a term used for a taxonomic group where its broader relationships are unknown or undefined. Alternatively, such groups are frequently referred to as "enigmatic taxa". In the system of open nomenclature, uncertainty ...

'' in the subseries

Ovalentaria Ovalentaria is a clade of ray-finned fishes within the Percomorpha, referred to as a subseries. It is made up of a group of fish families which are referred to in ''Fishes of the World's'' fifth edition as'' incertae sedis'', as well as the order ...

in the

clade A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, ...

Percomorpha Percomorpha () is a large clade of ray-finned fish that includes the tuna, seahorses, gobies, cichlids, flatfish, wrasse, perches, anglerfish, and pufferfish. Evolution Percomorpha are the most diverse group of teleost fish today. Teleosts, an ...

. They are elongated fishes, found in the

Indian Ocean The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or ~19.8% of the water on Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia to the east. To the south it is bounded by th ...

and 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 (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...

Classification

In some classifications, the genus ''

Notograptus ''Notograptus'' is a genus of marine fish in subclass Actinopterygii and order Perciformes. They are sometimes placed in a family of their own, Notograptidae, or may instead be included in the family Plesiopidae. ''Notograptus'' supposedly bears ...

'' is split in its own family,

Notograptidae ''Notograptus'' is a genus of marine fish in subclass Actinopterygii and order Perciformes. They are sometimes placed in a family of their own, Notograptidae, or may instead be included in the family Plesiopidae. ''Notograptus'' supposedly bears ...

, but

FishBase FishBase is a global species database of fish species (specifically finfish). It is the largest and most extensively accessed online database on adult finfish on the web.

is followed here. There are two

subfamilies In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end subfamily botanical names with "-oideae", and zoologi ...

within the Plesiopidae and the genera are as follows: *Subfamily Acanthoclininae Günther, 1861 ** Genus ''

Acanthoclinus ''Acanthoclinus'' is a genus of roundheads of the family Plesiopidae. They are elongated in shape with large mouths and eyes, and are found in the oceans around New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwe ...

'' Jenyns, 1841 ** Genus ''

Acanthoplesiops ''Acanthoplesiops'' is a genus of reef-dwelling fishes belonging to the family Plesiopidae The longfins, also known as roundheads or spiny basslets, are a family, Plesiopidae, which were formerly placed in the order Perciformes but are now rega ...

Regan The family name Regan, along with its cognates O'Regan, O Regan, Reagan, and O'Reagan, is an Anglicized form of the Irish surname Ó Riagáin or Ó Ríogáin, from Ua Riagáin. The meaning is likely to have originated in ancient Gaelic ''ri'' ...

, 1912 ** Genus ''

Beliops ''Beliops'' is a genus of ray-finned fish from the longfin family Plesiopidae The longfins, also known as roundheads or spiny basslets, are a family, Plesiopidae, which were formerly placed in the order Perciformes but are now regarded as being ...

'' Hardy, 1985 ** Genus ''

Belonepterygion The barred spiny basslet (''Belonepterygion fasciolatum'') is a species of ray-finned fish in the family Plesiopidae The longfins, also known as roundheads or spiny basslets, are a family, Plesiopidae, which were formerly placed in the order Per ...

McCulloch McCulloch is a Scottish surname. It's a variation of the Northern Irish surname McCullough. It's commonly found in Galloway. Notable people with the surname include: *Alan McCulloch (politician), New Zealand politician *Alan McLeod McCulloch ( ...

, 1915 ** Genus ''

'' Günther, 1867 * Subfamily Plesiopinae Günther, 1861 ** Genus '' Assessor'' Whitley, 1935 ** Genus ''

Calloplesiops ''Collplesiops'' is a genus of ray-finned fish from the family Plesiopidae, the longfins or roundheads. They are found in the Indo-Pacific. Species There are two species currently recognised in the genus ''Calloplesiops'': * '' Calloplesiops ...

'' Fowler and

Bean A bean is the seed of several plants in the family Fabaceae, which are used as vegetables for human or animal food. They can be cooked in many different ways, including boiling, frying, and baking, and are used in many traditional dishes th ...

, 1930 ** Genus '' Fraudella'' Whitley, 1935 ** Genus '' Paraplesiops''

Bleeker Bleeker is a Dutch occupational surname. Bleeker is an old spelling of ''(linnen)bleker'' ("linen bleacher").Plesiops'' Oken, 1817 ** Genus ''

Steeneichthys ''Steeneichthys'' is a genus of ray-finned fish in the family Plesiopidae, the longfin The longfins, also known as roundheads or spiny basslets, are a family, Plesiopidae, which were formerly placed in the order Perciformes but are now regarded ...

Gerald R. Allen Gerald Robert "Gerry" Allen (born March 26, 1942 in Los Angeles, California) is an American-born Australian ichthyologist. His career began in 1963, when he spent a semester at the University of Hawaii, where he also received a PhD in marine zo ...

and Randall, 1985 ** Genus ''

Trachinops ''Trachinops'', the hulafishes, is a genus of ray-finned fish in the family Plesiopidae, the longfins or roundheads. Species There are four recognised species in the genus: * '' Trachinops brauni'' Allen Allen, Allen's or Allens may refer to: ...

'' Günther, 1861

References

* * {{Taxonbar, from=Q1479667 Ovalentaria Taxa named by Albert Günther