Teleostei (teleosts) > Blenniiformes
(Blennies) > Tripterygiidae
(Triplefin blennies) > Tripterygiinae
Etymology: Helcogramma: Greek, helkos, -eos, -ous = ulcer, sore + Greek, gramma = letter, mark (Ref. 45335).
More on author: Rosenblatt.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 0 - 32 m (Ref. 13227), usually ? - 10 m (Ref. 6211). Tropical
Indo-West Pacific: Sri Lanka, including Cocos-Keeling Islands and Christmas Island, to Thailand then Japan, the Phoenix and Marshall Islands and American Samoa, also Fiji.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.1 cm SL male/unsexed; (Ref. 13227)
Morphology | Morphometrics
Adults inhabit surge zones of exposed reefs (Ref. 1602), on rock surfaces and under ledges (Ref. 13227). 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).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | 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. 126983)
Threat to humans
Fisheries: of no interest
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 123201
): 25.1 - 29.3, mean 28.5 °C (based on 2882 cells).
Phylogenetic diversity index (Ref. 82804
= 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).
Nutrients (Ref. 124155
): Calcium = 571 [200, 2,589] mg/100g; Iron = 3.15 [1.09, 7.71] mg/100g; Protein = 17.9 [16.1, 19.8] %; Omega3 = 0.106 [0.022, 0.525] g/100g; Selenium = 78.2 [13.0, 380.6] μg/100g; VitaminA = 53.6 [7.0, 417.9] μg/100g; Zinc = 5.77 [2.43, 11.32] mg/100g (wet weight);