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Blenniiformes (Blennies) >
Tripterygiidae (Triplefin blennies) > Tripterygiinae
Etymology: Helcogramma: Greek, helkos, -eos, -ous = ulcer, sore + Greek, gramma = letter, mark (Ref. 45335); ascensionis: Named for its type locality, Ascension.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; reef-associated; depth range 1 - 2 m (Ref. 86997). Tropical
Distribution
Territories | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Southeast Atlantic: Ascension.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 3.5 cm SL male/unsexed; (Ref. 86997)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 16 - 17; Dorsal soft rays (total): 10 - 11; Anal spines: 1; Anal soft rays: 18 - 20. This species is distinguished by the following characters: A 18-20; scales in the transverse series 12-14 + 1 + 9-10; no scales from head, nape, belly, pectoral base and area immediately adjacent to bases of first dorsal and anal fins; maxilla reaching posteriorly to below pupil; eye diameter 7.4 -8.9% of SL; head length 29.2-32.4% of S.L.; first dorsal spine 7.8-8.7% of S.L.; and its colouration (Ref. 86997).
Body shape (shape guide): elongated; Cross section: compressed.
Inhabits large rockpools (4 m diameter) and among rocks covered in coralline algae at 2 m depth (Ref. 86997).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Lubbock, R., 1980. The shore fishes of Ascension Island. J. Fish Biol. 17(3):283-303. (Ref. 86997)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
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