Teleostei (teleosts) >
Anguilliformes (Eels and morays) >
Ophichthidae (Snake eels) > Ophichthinae
Etymology: Ichthyapus: Greek, ichthys = fish + Greek, a = without + Greek, pous = feet; insularis: From the Latin word insularis, of an island, referring to its apparent endemic location.
More on author: McCosker.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; reef-associated; depth range 0 - 1 m (Ref. 76875). Tropical
Southeast Atlantic: known only from Acension Is.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 42.7 cm TL male/unsexed; (Ref. 76875)
Short description
Identification keys | Morphology | Morphometrics
Vertebrae: 121 - 126. An elongate finless species of sphagebranchin (sensu McCosker 1977)ophichthine with: tail 57-60% and head 9- 11% of total length; 4 preopercular pores and 5 pores in supratemporal canal; teeth conical, uniserial on jaws and vomer; body mostly colorless in preservative; and mean vertebral formula -45-123.5, total vertebrae 121-126.
Body shape (shape guide): eel-like; Cross section: circular.
Collected among rocks and sand.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
McCosker, J.E., 2004. A new species of finless snake eel (Anguilliformes: Ophichthidae) from Ascension Island, with comments on Ichthyapus acutirostris. Proc. Calif. Acad. Sci. 55(7):169-173. (Ref. 76875)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
Threat to humans
Harmless
Human uses
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Special reports
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref. 82804) |
PD50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00093 (0.00041 - 0.00212), b=2.99 (2.79 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trophic level (Ref. 69278) |
3.7 ±0.6 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 to moderate vulnerability (27 of 100). 🛈 |