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> Blenniiformes (Blennies) > Tripterygiidae (Triplefin blennies) > Tripterygiinae
Etymology: Helcogramma: Greek, helkos, -eos, -ous = ulcer, sore + Greek, gramma = letter, mark (Ref. 45335); nesion: The specific epithet is from the Greek "nesion", meaning island. The name refers to the isolated island of scales on either side of the nape and is treated as Noun in apposition..

Environment: milieu / climate zone / depth range / distribution range Ecologia

marino benthopelagico; distribuzione batimetrica 3 - 10 m (Ref. 52308). Tropical

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

Northwest Pacific: Japan and the Ogasawara Islands, Okino-shima at the south-western tip of Shikoku Island.

Size / Peso / Age

Maturity: L_m ? range ? - ? cm

Short description Chiavi di identificazione | Morfologia | Morfometria

Spine dorsali (totale) : 17 - 18; Raggi dorsali molli (totale) : 12 - 13; Spine anali: 1; Raggi anali molli: 20 - 22. With 1-2 symphysial mandibular sensory pores, second dorsal fin spines XIV, third dorsal fin segmented rays 11, last ribs on vertebral centrum 10, vertebrae 10+28 or 29=38 or 39, pored lateral line scales typically 25 to 27, nape scales absent, small isolated patch of scales on either side of nape, each patch surrounded by naked area.

Female members of the Tripterygiidae have eggs that are hemispherical and covered with numerous sticky threads that anchor them in the algae on the nesting sites (Ref. 240). Larvae are planktonic which occur primarily in shallow, nearshore waters (Ref. 94114).

Life cycle and mating behavior Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve

Main reference Upload your references | Bibliografia | Coordinatore : Fricke, Ronald | Collaboratori

Williams, J.T. and J.C. Howe, 2003. Seven new species of the triplefin fish genus Helcogramma (Tripterygiidae) from the Indo-Pacific. aqua, J. Ichthyol. Aquat. Biol. 7(4):151-176. (Ref. 52308)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 06 May 2010

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

Informazioni ulteriori

Trophic ecology
Prede
Diet compositions
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Ecology
Ecologia

Population dynamics
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Length-length rel.
Length-frequencies
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Life cycle
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Egg(s)
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Dinamica popolazioni larvali

Distribution
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Anatomy
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Physiology
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Visual pigment(s)
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Toxicities (LC50s)

Genetics
Genetica
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Stamps, coins, misc.

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00562 (0.00258 - 0.01228), b=3.08 (2.89 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.1 ±0.3 se; based on size and trophs of closest relatives

Resilienza (Ref. 120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

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Helcogramma nesion Williams & Howe, 2003