Helcogramma is a genus in the triplefin family Tripterygiidae. The blennies in the genus Helcogramma are found throughout the Indo-Pacific and in the South Atlantic Ocean off the islands of St Helena and Ascension.[2]

Helcogramma
Helcogramma decurrens, female
Helcogramma trigloides
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Blenniiformes
Family: Tripterygiidae
Subfamily: Tripterygiinae
Genus: Helcogramma
McCulloch & Waite, 1918
Type species
Helcogramma decurrens
McCulloch & Waite, 1918[1]

Characteristics

edit

The fishes in the genus Helcogramma are characterised by the possession of a continuous lateral line which bends down towards the operculum, this lateral line comprises 7–39 tubular pored scales. There are three spines in the first dorsal fin and the anal fin has one spine, the 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 and the vertebrae, the hypurals.[3]

Species

edit

There are currently 41 recognized species in this genus:

References

edit
  1. ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Helcogramma". Catalog of Fishes. California Academy of Sciences. Retrieved 23 May 2019.
  2. ^ Jeffrey T. Williams & Carolyn J. McCormick (1990). "Two New Species of the Triplefin Fish Genus Helcogramma (Tripterygiidae) from the Western Pacific Ocean". Copeia. 1990 (4): 1020–1030. doi:10.2307/1446485. JSTOR 1446485.
  3. ^ a b Fricke, Ronald; Erdmann, Mark V. (2017). "Helcogramma Atauroensis, A New Species of Triplefin from Ataúro Island, Timor-Leste, Eastern Indian Ocean (Teleostei: Tripterygiidae)". Journal of the Ocean Science Foundation. 26: 34–45. doi:10.5281/zenodo.377034.
  4. ^ Tashiro, Satokuni; Motomura, Hiroyuki (2014). "The Validity of Helcogramma ishigakiensis (Aoyagi, 1954) and a Synopsis of Species of Helcogramma from the Ryukyu Islands, Southern Japan (Perciformes: Tripterygiidae)". Species Diversity. 19 (2): 97–110. doi:10.12782/sd.19.2.097.
  5. ^ Chen, I-Shiung; Chiang, Min-Chia (2012). "A new species of the genus Helcogramma (Blenniiformes, Tripterygiidae) from Taiwan". ZooKeys (216): 57–72. doi:10.3897/zookeys.216.3407. PMC 3426895. PMID 22936878.