Teleostei (teleosts) >
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
Ecology
Marine; demersal; depth range 0 - 6 m (Ref. 90102). Tropical
Western Pacific: Widespread in the area, from the Philippines, Viet Nam, Indonesia (Borneo) to the Solomon Islands (Ref. 13227). Recently collected from Fiji and Tonga (Williams pers. comm.). New locality records from Thailand and the Andaman Sea (Ref. 27223).
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 4.0 cm TL male/unsexed; (Ref. 48636)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 17 - 18; Dorsal soft rays (total): 10 - 11; Anal spines: 1; Anal soft rays: 20; Vertebrae: 37. Trunk without longitudinal stripes; symphyseal dentary pores 1; upper lip with proboscis-like extension on males, head with horizontal yellowish or bluish white line from the upper rim of upper jaw to opercle (Ref. 94457). Males are easily recognized by the extended nose and change color to display to females with an electric blue line below the eye, shaded by black below (Ref. 48636). Also Ref. 94101.
Adults inhabit clear coastal reefs with algae covered rocky boulders, usually in small groups (Ref. 48636). They occur in very shallow depths on rock surfaces and under ledges (Ref. 48636). 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 of 0 m reported from Ref. 58018.
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae
Fricke, R., 1994. Tripterygiid fishes of Australia, New Zealand and the southwest Pacific Ocean (Teleostei). Theses Zool. 24:1-585. (Ref. 13227)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Fisheries: of no interest; aquarium: potential
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Estimates based on models
Preferred temperature (Ref.
123201): 25 - 29.3, mean 28.6 °C (based on 2065 cells).
Phylogenetic diversity index (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).
Trophic level (Ref.
69278): 3.0 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
