Classification / 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).
Environment: milieu / climate zone / depth range / distribution range
Écologie
marin benthopélagique. Tropical; 11°S - 26°S, 32°E - 50°E (Ref. 75031)
Western Indian Ocean: Mozambique to Comoros.
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 3.1 cm SL mâle / non sexé; (Ref. 75031)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 16; Rayons mous dorsaux (Total) : 10 - 11; Épines anales: 1; Rayons mous anaux: 18 - 20; Vertèbres: 34 - 36. Diagnosis: Dorsal fin III + XIII+ 10-11, first fin tall; anal fin I + 18-20; pectoral rays 15 (3+6+6); pelvic fin I, 2, spine short and hidden, segmented rays simple, partially united by membrane. Vertebrae 11 + 23-25. LL total lateral scales 37-38; tubed 24-30, ends below 3rd dorsal fin; transverse 9/7; nape, belly, and anterior of 1st dorsal fin base scaleless, caudal-fin base with 2-3 rows of scales. Mandibular pores 4+1+4. Lower labial folds narrow; upper lip inner margin crenulated. Orbital cirrus simple and pointed. Head length 3.4 in SL; eye 2.9, maxilla 2.2 in HL. Overall dark pink, with 3 orange spots at 2nd dorsal-fin base, and pink spots along midline and anal-fin base. Males masked black below eye. Females unmasked head; caudal peduncle with dark bar (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).
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
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)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2024-1)
Utilisations par l'homme
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Sources Internet
Estimates based on models
Phylogenetic diversity index (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).
Niveau trophique (Ref.
69278): 3.0 ±0.3 se; based on size and trophs of closest relatives
Résilience (Ref.
120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
