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Helcogramma nigra  Williams & Howe, 2003

Rotuma triplefin
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Helcogramma nigra   AquaMaps   Data sources: GBIF OBIS
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Classification / Names Populärnamn | synonymer | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (strålfeniga fiskar) > Perciformes (Perch-likes) > Tripterygiidae (Triplefin blennies) > Tripterygiinae
Etymology: Helcogramma: Greek, helkos, -eos, -ous = ulcer, sore + Greek, gramma = letter, mark (Ref. 45335);  nigra: The specific epithet is from the Latin nigra meaning black. The name refers to the black fins of the males.

Miljö / Klimat / Range Ekologi

; marina bentopelagisk; djupintervall 1 - 14 m (Ref. 52308).   Tropical, preferred ?

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

Western Central Pacific: Papua New Guinea, Vanuatu, and Fiji.

Size / Vikt / Age

Maturity: Lm ?  range ? - ? cm
Max length : 3.8 cm TL hane/ej könsbestämd; (Ref. 90102)

Short description Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt): 16 - 17; Mjukstrålar i ryggfenan (totalt): 113; Taggstrålar i analfenan 1; Mjukstrålar i analfenan: 19 - 21; Ryggkotor: 36 - 38. A species of Helcogramma (sensu Hansen, 1986) with 1-2 symphysial mandibular sensory pores, second dorsal fin spines XIII (two of 26 specimens with XIV), third dorsal fin segmented rays 10-12, last ribs on vertebral centrum 11, vertebrae modally 11+26=37 (value range: 11+25 to 27=36 to 38), pored lateral line scales modally 25 (value range: 23-29), nape scales absent, males with dorsal, caudal and anal fins dark.

Biologi     Ordlista (t.ex. epibenthic)

Adults inhabit exposed rocky and coralline boulders of coasts (Ref. 90102). Eggs 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). Minimum depth from Ref. 58018.

Life cycle and mating behavior Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver

Main reference Upload your references | referenser | Koordinator : Fricke, Ronald | Medarbetare

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

IUCN Red List Status (Ref. 115185)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




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