page_title: Threefin blenny
section_title: Genera
hierarchical_section_title: Threefin blenny / Genera
context_page_description: Threefin or triplefin blennies are blenniiforms, small percomorph marine fish of the family Tripterygiidae. Found in tropical and temperate waters of the Atlantic, Pacific and Indian Oceans, the family contains about 150 species in 30 genera. The family name derives from the Greek tripteros meaning "with three wings".
  With an elongated, typical blenny form, threefin blennies differ from their relatives by having a dorsal fin separated into three parts; 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, 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; 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 and rocks.
context_section_description: FishBase lists about 150 species in 30 genera:
  Subfamily Notoclininae Fricke, 2009
  Brachynectes Scott, 1957
  Notoclinus Gill, 1893
  Subfamily Tripterygiinae Whitley, 1931
  Acanthanectes Holleman & Buxton, 1993
  Apopterygion Kuiter, 1986
  Axoclinus Fowler, 1944
  Bellapiscis Hardy, 1987
  Blennodon Hardy, 1987
  Ceratobregma Holleman, 1987
  Cremnochorites Holleman, 1982
  Crocodilichthys Allen & Robertson, 1991
  Cryptichthys Hardy, 1987
  Enneanectes D.S. Jordan & Evermann, 1895
  Enneapterygius Rüppell, 1835
  Forsterygion Whitley & Phillipps, 1939
  Gilloblennius Whitley & Phillipps, 1939
  Helcogramma McCulloch & Waite, 1918
  Helcogrammoides Rosenblatt, 1990
  Karalepis Hardy, 1984
  Lepidoblennius Steindachner, 1867
  Lepidonectes Bussing, 1991
  Matanui Jawad & Clements, 2004
  Norfolkia Fowler, 1953
  Notoclinops Whitley, 1930
    
  Ruanoho Hardy, 1986
  Springerichthys Shen, 1994
  Trianectes McCulloch & Waite, 1918
  Trinorfolkia Fricke, 1994
  Tripterygion Risso, 1827
  Ucla Holleman, 1993
caption: Yellow-and-black triplefin
  Forsterygion flavonigrum
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