# Helcogramma

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{{Short description|Genus of fishes}}
{{Automatic_taxobox
| image = HelcogrammaDecurrensRLS.jpg
| image_caption = ''Helcogramma decurrens'', female
| image2 = Helcogramma trigloides - ZooKeys-216-057-g003e.jpeg
| image2_caption = ''Helcogramma trigloides''
| taxon = Helcogramma
| authority = [McCulloch](/source/Allan_Riverstone_McCulloch) & [Waite](/source/Edgar_Ravenswood_Waite), 1918
| type_species = ''Helcogramma decurrens''
| type_species_authority = McCulloch & Waite, 1918<ref name = CofF>{{Cof record|genid=9033|title=''Helcogramma''|access-date=23 May 2019}}</ref>
}}

'''''Helcogramma''''' is a [genus](/source/genus) in the [triplefin](/source/triplefin) [family](/source/Family_(taxonomy)) [Tripterygiidae](/source/Tripterygiidae). The blennies in the genus ''Helcogramma'' are found throughout the [Indo-Pacific](/source/Indo-Pacific) and in the South Atlantic Ocean off the islands of [St Helena](/source/St_Helena) and [Ascension](/source/Ascension_Island).<ref name = Williams>{{cite journal | author = Jeffrey T. Williams | author2 = Carolyn J. McCormick | name-list-style = amp | year = 1990 | title = Two New Species of the Triplefin Fish Genus Helcogramma (Tripterygiidae) from the Western Pacific Ocean | jstor=1446485 | journal = Copeia | volume = 1990 | issue = 4 | pages = 1020–1030| doi = 10.2307/1446485 }}</ref>

==Characteristics==
The fishes in the genus ''Helcogramma'' are characterised by the possession of a continuous [lateral line](/source/lateral_line) which bends down towards the [operculum](/source/Operculum_(fish)), this lateral line comprises 7–39 tubular pored scales. There are three spines in the first [dorsal fin](/source/dorsal_fin) and the [anal fin](/source/anal_fin) has one spine, the [pelvic fin](/source/pelvic_fin) has a single spine and two rays. The head is scaleless and normally the bases of the dorsal and anal fins have a scaleless strip. There are five bones in the joint between the [caudal fin](/source/caudal_fin) and the [vertebrae](/source/vertebrae), the hypurals.<ref name =F&E/>

==Species==
There are currently 41 recognized species in this genus:
* ''[Helcogramma albimacula](/source/Helcogramma_albimacula)'' <small>[J. T. Williams](/source/Jeffrey_Taylor_Williams) & [Howe](/source/Jeffrey_C._Howe), 2003</small> (Whitespot triplefin)
* ''[Helcogramma alkamr](/source/Helcogramma_alkamr)'' <small>[Holleman](/source/Wouter_Holleman), 2007</small>
* ''[Helcogramma aquila](/source/Helcogramma_aquila)'' <small>[J. T. Williams](/source/Jeffrey_Taylor_Williams) & [C. J. McCormick](/source/Carolyn_J._McCormick), 1990</small> (Darktail triplefin)
* ''[Helcogramma ascensionis](/source/Helcogramma_ascensionis)'' <small>[Lubbock](/source/Roger_Lubbock), 1980</small> (Ascension triplefin) 
* ''[Helcogramma atauroensis](/source/Helcogramma_atauroensis)'' <small>Fricke & Erdmann, 2017</small><ref name = F&E>{{Cite journal | doi=10.5281/zenodo.377034| title=Helcogramma Atauroensis, A New Species of Triplefin from Ataúro Island, Timor-Leste, Eastern Indian Ocean (Teleostei: Tripterygiidae)| journal=Journal of the Ocean Science Foundation| volume=26| pages=34–45| last1=Fricke| first1=Ronald| last2=Erdmann| first2=Mark V.| year=2017}}</ref>
* ''[Helcogramma billi](/source/Helcogramma_billi)'' <small>[P. E. Hadley](/source/Patricia_Elizabeth_Hadley_Hansen), 1986</small>
* ''[Helcogramma capidata](/source/Helcogramma_capidata)'' <small>[Rosenblatt](/source/Richard_Heinrich_Rosenblatt), 1960</small> (Hooded triplefin)
* ''[Helcogramma cerasina](/source/Helcogramma_cerasina)'' <small>[J. T. Williams](/source/Jeffrey_Taylor_Williams) & [Howe](/source/Jeffrey_C._Howe), 2003</small> 
* ''[Helcogramma chica](/source/Helcogramma_chica)'' <small>[Rosenblatt](/source/Richard_Heinrich_Rosenblatt), 1960</small> (Little hooded triplefin) 
* ''[Helcogramma decurrens](/source/Helcogramma_decurrens)'' <small>[McCulloch](/source/Allan_Riverstone_McCulloch) & [Waite](/source/Edgar_Ravenswood_Waite), 1918</small> (Black-throated triplefin)
* ''[Helcogramma desa](/source/Helcogramma_desa)'' <small>[J. T. Williams](/source/Jeffrey_Taylor_Williams) & [Howe](/source/Jeffrey_C._Howe), 2003</small> (Neglected triplefin)
* ''[Helcogramma ellioti](/source/Helcogramma_ellioti)'' <small>([Herre](/source/Albert_William_Herre), 1944)</small>
* ''[Helcogramma ememes](/source/Helcogramma_ememes)'' <small>[Holleman](/source/Wouter_Holleman), 2007</small>
* ''[Helcogramma fuscipectoris](/source/Helcogramma_fuscipectoris)'' <small>([Fowler](/source/Henry_Weed_Fowler), 1946)</small> (Fourspot triplefin) 
* ''[Helcogramma fuscopinna](/source/Helcogramma_fuscopinna)'' <small>[Holleman](/source/Wouter_Holleman), 1982</small> (Blackfin triplefin) 
* ''[Helcogramma gymnauchen](/source/Helcogramma_gymnauchen)'' <small>([M. C. W. Weber](/source/Max_Carl_Wilhelm_Weber), 1909)</small> (Red-finned triplefin)
* ''[Helcogramma hudsoni](/source/Helcogramma_hudsoni)'' <small>([D. S. Jordan](/source/David_Starr_Jordan) & [Seale](/source/Alvin_Seale), 1906)</small> (Hudson's triplefin) 
* ''[Helcogramma inclinata](/source/Helcogramma_inclinata)'' <small>([Fowler](/source/Henry_Weed_Fowler), 1946)</small> (Triangle triplefin)
* ''[Helcogramma ishigakiensis](/source/Helcogramma_ishigakiensis)'' <small>[Aoyagi](/source/Hy%C5%8Dji_Aoyagi), 1954</small> <ref name="Tashiro2014">{{Cite journal | doi=10.12782/sd.19.2.097|title = The Validity of Helcogramma ishigakiensis (Aoyagi, 1954) and a Synopsis of Species of Helcogramma from the Ryukyu Islands, Southern Japan (Perciformes: Tripterygiidae)| journal=Species Diversity| volume=19| issue=2| pages=97–110|year = 2014|last1 = Tashiro|first1 = Satokuni| last2=Motomura| first2=Hiroyuki| doi-access=free}}</ref>
* ''[Helcogramma kranos](/source/Helcogramma_kranos)'' <small>[R. Fricke](/source/Ronald_Fricke), 1997</small> (Helmet triplefin)
* ''[Helcogramma lacuna](/source/Helcogramma_lacuna)'' <small>[J. T. Williams](/source/Jeffrey_Taylor_Williams) & [Howe](/source/Jeffrey_C._Howe), 2003</small>
* ''[Helcogramma larvata](/source/Helcogramma_larvata)'' <small>[R. Fricke](/source/Ronald_Fricke) & [J. E. Randall](/source/John_Ernest_Randall), 1992</small>
* ''[Helcogramma maldivensis](/source/Helcogramma_maldivensis)'' <small>[R. Fricke](/source/Ronald_Fricke) & [J. E. Randall](/source/John_Ernest_Randall), 1992</small>
* ''[Helcogramma microstigma](/source/Helcogramma_microstigma)'' <small>[Holleman](/source/Wouter_Holleman), 2006</small>
* ''[Helcogramma nesion](/source/Helcogramma_nesion)'' <small>[J. T. Williams](/source/Jeffrey_Taylor_Williams) & [Howe](/source/Jeffrey_C._Howe), 2003</small>
* ''[Helcogramma nigra](/source/Helcogramma_nigra)'' <small>[J. T. Williams](/source/Jeffrey_Taylor_Williams) & [Howe](/source/Jeffrey_C._Howe), 2003</small> (Rotuma triplefin)
* ''[Helcogramma novaecaledoniae](/source/Helcogramma_novaecaledoniae)'' <small>[R. Fricke](/source/Ronald_Fricke), 1994</small> (New Caledonian triplefin)
* ''[Helcogramma obtusirostris](/source/Helcogramma_obtusirostris)'' <small>([Klunzinger](/source/Carl_Benjamin_Klunzinger), 1871)</small> (Hotlips triplefin) 
* ''[Helcogramma randalli](/source/Helcogramma_randalli)'' <small>[J. T. Williams](/source/Jeffrey_Taylor_Williams) & [Howe](/source/Jeffrey_C._Howe), 2003</small> (Randall's triplefin) 
* ''[Helcogramma rharhabe](/source/Helcogramma_rharhabe)'' <small>[Holleman](/source/Wouter_Holleman), 2007</small>
* ''[Helcogramma rhinoceros](/source/Helcogramma_rhinoceros)'' <small>[P. E. Hadley](/source/Patricia_Elizabeth_Hadley_Hansen), 1986</small> (Rhinocerus triplefin) 
* ''[Helcogramma rosea](/source/Helcogramma_rosea)'' <small>[Holleman](/source/Wouter_Holleman), 2006</small> (Rosy triplefin) 
* ''[Helcogramma serendip](/source/Helcogramma_serendip)'' <small>[Holleman](/source/Wouter_Holleman), 2007</small>
* ''[Helcogramma shinglensis](/source/Helcogramma_shinglensis)'' <small>Lal Mohan, 1971</small>
* ''[Helcogramma solorensis](/source/Helcogramma_solorensis)'' <small>[R. Fricke](/source/Ronald_Fricke), 1997</small> (Solor triplefin) 
* ''[Helcogramma springeri](/source/Helcogramma_springeri)'' <small>[P. E. Hadley](/source/Patricia_Elizabeth_Hadley_Hansen), 1986</small> (Springer's triplefin) 
* ''[Helcogramma steinitzi](/source/Helcogramma_steinitzi)'' <small>[E. Clark](/source/Eugenie_Clark), 1980</small> (Red triplefin) 
* ''[Helcogramma striata](/source/Helcogramma_striata)'' <small>[P. E. Hadley](/source/Patricia_Elizabeth_Hadley_Hansen), 1986</small> (Tropical striped triplefin) 
* ''[Helcogramma trigloides](/source/Helcogramma_trigloides)'' <small>([Bleeker](/source/Pieter_Bleeker), 1858)</small> (Scarf triplefin) 
* ''[Helcogramma vulcana](/source/Helcogramma_vulcana)'' <small>[J. E. Randall](/source/John_Ernest_Randall) & [E. Clark](/source/Eugenie_Clark), 1993</small> (Volcano triplefin) 
* ''[Helcogramma williamsi](/source/Helcogramma_williamsi)'' <small>[M. C. Chiang](/source/Chiang_Min-Chia) & [I. S. Chen](/source/Chen_I-Shiung), 2012</small> <ref name="Chiang2012">{{Cite journal | doi=10.3897/zookeys.216.3407| pmid=22936878| pmc=3426895|title = A new species of the genus Helcogramma (Blenniiformes, Tripterygiidae) from Taiwan| journal=ZooKeys| issue=216| pages=57–72|year = 2012|last1 = Chen|first1 = I-Shiung| last2=Chiang| first2=Min-Chia| doi-access=free}}</ref>

==References==
{{Reflist}}

{{Taxonbar|from=Q628986}}

Category:Helcogramma
Category:Tripterygiidae
Category:Taxa named by Allan Riverstone McCulloch
Category:Taxa named by Edgar Ravenswood Waite

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Adapted from the Wikipedia article [Helcogramma](https://en.wikipedia.org/wiki/Helcogramma) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Helcogramma?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.