Classificação / 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); rharhabe: Named after Rharhabe a paramount chief from 1775 to 1787. The name is treated as a noun in apposition..
Environment: milieu / climate zone / depth range / distribution range
Ecologia
marinhas bentopelágico; intervalo de profundidade 0 - 3 m (Ref. 75031). Tropical
Western Indian and Southeast Atlantic: from Mozambique (Bazaruto) to South Africa. Speciimens collected from Shimoni, Kenya may refer to the species but are in poor condition so until additional specimens are available, Bazaruto is considered its most northern limit (Ref. 75031).
Tamanho / Peso / Idade
Maturity: Lm ? range ? - ? cm
Max length : 3.7 cm SL macho/indeterminado; (Ref. 75031)
Descrição suscinta
Chaves de identificação | Morfologia | Morfometria
Espinhos dorsais (total) : 10 - 17; Raios dorsais (total) : 10 - 11; Espinhos anais: 1; Raios anais : 19; Vértebras: 34 - 35. Diagnosis: Medium to large species of the genus. Dorsal fin III + XIII+ 10, 2nd fin twice the 1st; anal fin I, 19; pectoral rays 16 (1+8+7); pelvic fin I, 2, spine short and hidden, segmented rays simple, partially united by membrane. Vertebrae 10+24-25. LL total lateral scales 37-38; tubed 21-31 (geographically variant means), ends below junction of 2nd and 3rd dorsal fin; nape, belly, 1st dorsal fin and anterior anal-fin bases scaleless, caudal-fin base with 2 rows of scales. Mandibular pores 5+1+5. Orbital cirrus simple and small. Head length 3.3-3.7 in SL; eye 2.6-3.2, maxilla 2.2-2.6 in HL. Males body with red and black spots evenly scattered, vertical stripes from dorsal fin to midline of side, and silvery spots below midline; head with blue stripe from mouth corner to preopercle, upperlip corner with crimson markings, black in the center (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).
Ciclo de vida ou comportamento de acasalamento
Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas
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 na Lista Vermelha da UICN (Ref. 130435)
Uso pelos humanos
Ferramentas
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Estimates based on models
Preferred temperature (Ref.
123201): 22.4 - 27.5, mean 26.8 °C (based on 194 cells).
Índice de diversidade filogenética (Ref.
82804): PD
50 = 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).
Nível Trófico (Ref.
69278): 3.1 ±0.3 se; based on size and trophs of closest relatives
Resiliência (Ref.
120179): Elevada, tempo mínimo de duplicação da população menor que 15 meses (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
