Classificatie / Names
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Blenniiformes (Blennies) >
Tripterygiidae (Triplefin blennies) > Tripterygiinae
Etymology: Helcogramma: Greek, helkos, -eos, -ous = ulcer, sore + Greek, gramma = letter, mark (Ref. 45335); ememes: Named after Margaret Mary Smith (Director of the J. L. B. Smith Institute in the mid-70s) often called MMS. The specific name is used as a noun in apposition.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien benthopelagisch. Tropical
Western Indian Ocean: Kenya to Seyechelles, south to Mozambique.
Grootte / Gewicht / Leeftijd
Maturity: Lm ? range ? - ? cm
Max length : 3.9 cm SL mannelijk / geslacht onbekend; (Ref. 75031)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 16 - 17; Dorsale zachte stralen (totaal) : 10 - 11; Anale stekels: 1; Anale zachte stralen: 18 - 20; Wervels: 34 - 37. Diagnosis: Dorsal fin III + XIII+ 10, second fin twice height of first; anal fin I + 18-19; pectoral rays 15 (East Africa: 1+7+7, Seychelles: 2+7+6 or 1+8+6); pelvic fin I, 2, spine short and hidden, segmented rays simple, partially united by membrane. Vertebrae 10 + 24-27. LL total lateral scales 36-38; tubed 19-23 (21) scales; transverse 9/7; nape, and dorsal and anal-fin base scaleless, caudal fin base with 2 rows of scales. Mandibular pores 4-7+3+4-7. Orbital cirrus small, pointed. Head length 3.9 (Seychelles) or 3.0 (East Africa) in SL; eye 3.0; maxilla 2.4 in HL. Significant morphological character variation between Seychelles and East Africa specimens, in addition to mentioned above they also differ in mean head length. Live males brown with three narrow white saddle marks on body and with lower half of head black (Ref. 75031).
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).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Holleman, W., 2007. Fishes of the genus Helcogramma (Blennioidei: Tripterygiidae) in the Western Indian Ocean, including Sri Lanka, with description of four new species. Smith. Bull. 7:51-81. (Ref. 75031)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2024-1)
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00617 (0.00288 - 0.01322), b=3.04 (2.86 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.1 ±0.3 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref.
120179): Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
