fish
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of ...
of the family Tripterygiidae. Found in tropical and temperate waters of the
Atlantic
The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe an ...
,
Pacific
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 contine ...
and
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 t ...
s, the family contains about 150 species in 30 genera. The family name derives from the
Greek
Greek may refer to:
Greece
Anything of, from, or related to Greece, a country in Southern Europe:
*Greeks, an ethnic group.
*Greek language, a branch of the Indo-European language family.
**Proto-Greek language, the assumed last common ancestor ...
''tripteros'' meaning "with three wings".
With an elongated, typical blenny form, threefin blennies differ from their relatives by having a
dorsal fin
A dorsal fin is a fin located on the back of most marine and freshwater vertebrates within various taxa of the animal kingdom. Many species of animals possessing dorsal fins are not particularly closely related to each other, though through c ...
separated into three parts (hence the name); the first two are spinous. The small, slender pelvic fins are located underneath the throat and possess a single spine; the large anal fin may have one or two spines. The pectoral fins are greatly enlarged, and the tail fin is rounded. The
New Zealand topknot
The New Zealand topknot, ''Notoclinus fenestratus'', is a triplefin of the genus '' Notoclinus'', found around the North Island of New Zealand in reef
A reef is a ridge or shoal of rock, coral or similar relatively stable material, lyi ...
, ''Notoclinus fenestratus'', is the largest species at 20 cm in total length; most other species do not exceed 6 cm.
Many threefin blennies are brightly coloured, often for reasons of
camouflage
Camouflage is the use of any combination of materials, coloration, or illumination for concealment, either by making animals or objects hard to see, or by disguising them as something else. Examples include the leopard's spotted coat, the b ...
; these species are popular in the aquarium hobby. As demersal fish, threefin blennies spend most of their time on or near the bottom on
coral
Corals are marine invertebrates within the class Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the important reef builders that inhabit tropical oceans and ...
and rocks. The fish are typically found in shallow, clear waters with sun exposure, such as
lagoon
A lagoon is a shallow body of water separated from a larger body of water by a narrow landform, such as reefs, barrier islands, barrier peninsulas, or isthmuses. Lagoons are commonly divided into ''coastal lagoons'' (or ''barrier lagoons'') ...
s and seaward
reef
A reef is a ridge or shoal of rock, coral or similar relatively stable material, lying beneath the surface of a natural body of water. Many reefs result from natural, abiotic processes— deposition of sand, wave erosion planing down rock o ...
s; nervous fish, they retreat to rock crevices at any perceived threat.
Threefin blennies are diurnal and territorial; many species exhibit
sexual dichromatism
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most ani ...
, with the females drab compared to the males. The second dorsal fin is also extended in the males of some species. Small
invertebrate
Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate ...
Notoclinus
''Notoclinus'' is a genus of triplefins in the family Tripterygiidae.
Species
* Brown topknot, '' Notoclinus compressus'' ( Hutton, 1872)
* New Zealand topknot
The New Zealand topknot, ''Notoclinus fenestratus'', is a triplefin of the genus ...
''
Gill
A gill () is a respiratory organ that many 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 respiration on land provided they are ...
Allen Allen, Allen's or Allens may refer to:
Buildings
* Allen Arena, an indoor arena at Lipscomb University in Nashville, Tennessee
* Allen Center, a skyscraper complex in downtown Houston, Texas
* Allen Fieldhouse, an indoor sports arena on the Unive ...
&
Robertson
Robertson may refer to:
People
* Robertson (surname) (includes a list of people with this name)
* Robertson (given name)
* Clan Robertson, a Scottish clan
* Robertson, stage name of Belgian magician Étienne-Gaspard Robert (1763–1837)
Places ...
Enneanectes
''Enneanectes'' is a genus of triplefin fish in the family Tripterygiidae.
Species
There are currently 15 recognized species in this genus:
* '' Enneanectes altivelis'' Rosenblatt, 1960 (Lofty triplefin)
* '' Enneanectes atrorus'' Rosenblatt, 1 ...
Forsterygion
''Forsterygion'' is a genus of triplefins in the family Tripterygiidae native to coastal New Zealand, but also introduced to Tasmania, Australia.
Species
The following species are classified in this genus:
* Spotted robust triplefin, '' Forst ...
'' Whitley &
Phillipps
Phillipps is both a given name and an English surname. Notable people with the name include:
"Phillipps" has also been a shortened version of Philippson, a German surname especially prevalent amongst German Jews and Dutch Jews.
People with th ...
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 ( ...
Rosenblatt Rosenblatt is a surname of German and Jewish origin, meaning "rose leaf". People with this surname include:
* Albert Rosenblatt (born 1936), New York Court of Appeals judge
* Dana Rosenblatt, known as "Dangerous" (born 1972), American boxer
* Elie ...
Jawad
Jawad is a Tehsil and a Nagar Panchayat in Neemuch district in the Indian state of Madhya Pradesh.
There are six towns and 105 villages in Jawad.
Demographics
As of the 2011 Census of India
The 2011 Census of India or the 15th India ...
Ucla
The University of California, Los Angeles (UCLA) is a public land-grant research university in Los Angeles, California. UCLA's academic roots were established in 1881 as a teachers college then known as the southern branch of the California ...
Paleocene
The Paleocene, ( ) or Palaeocene, is a geological epoch that lasted from about 66 to 56 million years ago (mya). It is the first epoch of the Paleogene Period in the modern Cenozoic Era. The name is a combination of the Ancient Greek ''pal ...
from: -55.8 till: -33.9 color:eocene text:
Eocene
The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', " ...
Miocene
The Miocene ( ) is the first epoch (geology), geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and mea ...
Pleist.
The Pleistocene ( , often referred to as the ''Ice age'') is the geological epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in ...
Paleocene
The Paleocene, ( ) or Palaeocene, is a geological epoch that lasted from about 66 to 56 million years ago (mya). It is the first epoch of the Paleogene Period in the modern Cenozoic Era. The name is a combination of the Ancient Greek ''pal ...
from: -55.8 till: -33.9 color:eocene text:
Eocene
The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', " ...
Miocene
The Miocene ( ) is the first epoch (geology), geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and mea ...
Pleist.
The Pleistocene ( , often referred to as the ''Ice age'') is the geological epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in ...
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