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surf eel

Ichthyapus ophioneus (Evermann & Marsh, 1900)

Source-backed taxonomic record

Accepted species in Catalogue of Life’s 11 September 2026 base release. This preserves the source classification and available supporting data; it is not a completed species monograph.

Open encyclopedia reference

The surf eel (Ichthyapus ophioneus), also known as the Finless snake eel in the United States, is an eel in the family Ophichthidae (worm/snake eels). It was described by Barton Warren Evermann and Millard Caleb Marsh in 1900, originally under the genus Sphagebranchus. It is a marine, tropical eel which is known from the western and eastern Atlantic Ocean, including Bermuda, the Bahamas, Florida, USA; Puerto Rico, the Virgin Islands, northern South America, and St. Helena Island. It dwells at a maximum depth of 35 metres (115 ft), most often between 5 and 15 metres (16 and 49 ft), and forms burrows in sand bottoms in surf areas, from which its common name is derived. Males can reach a maximum total length of 45 centimetres (18 in).

Wikipedia contributors, Surf eel; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T02:44:06.172031+00:00. This reference remains separate from the taxonomic record.

Identity & source status

Scientific name
Ichthyapus ophioneus (Evermann & Marsh, 1900)
Name authority
(Evermann & Marsh, 1900)
Common name
surf eel
Rank
species
Accepted status
accepted
Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Order
Anguilliformes
Family
Ophichthidae
Genus
Ichthyapus
Extinction status
Not supplied by this source

Source habitat flags: Marine: yes · Freshwater: no · Terrestrial: no. These do not form a complete habitat description.

Classification family tree

Nested taxonomic groups from the source. This is not a direct-ancestor chain, a dated evolutionary tree or a phylogenetic reconstruction.

  1. domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
  2. kingdomAnimalia
  3. phylumChordata
  4. subphylumVertebrata
  5. infraphylumGnathostomata
  6. parvphylumOsteichthyes
  7. gigaclassActinopterygii
  8. superclassActinopteri
  9. classTeleostei
  10. orderAnguilliformes
  11. familyOphichthidae Günther, 1870
  12. subfamilyOphichthinae Günther, 1870
  13. genusIchthyapus Brisout de Barneville, 1847
  14. speciesIchthyapus ophioneus (Evermann & Marsh, 1900)

Close classified relatives

These entries share the source’s genus, Ichthyapus. They are not necessarily the closest relatives established by molecular evidence.

SpeciesClassificationSource status
smiling sand eelIchthyapus selachops (Jordan & Gilbert, 1882)OphichthidaeChordataAccepted speciesExtinction status not supplied

Browse 283 records assigned to Ophichthidae.

Names & synonyms

Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.

Recorded nameSource status
Rhinenchelys ophioneus (Evermann & Marsh, 1900) (Evermann & Marsh, 1900)synonym
Sphagebranchus conklini Eigenmann, 1916 Eigenmann, 1916synonym
Caecula ophioneus (Evermann & Marsh, 1900) (Evermann & Marsh, 1900)synonym
Sphagebranchus ophioneus Evermann & Marsh, 1900 Evermann & Marsh, 1900synonym

Source literature & publication evidence

References attached to this source record, including nomenclatural citations where supplied. This is a selected bibliography; abbreviated citations remain in the source’s form.

  1. https://www.marinespecies.org/aphia.php?p=taxdetails&id=279112 Source fields: Taxon.tsv dwc:namePublishedIn, Taxon.tsv dcterms:references

Origins, evidence & remaining research

Name authority and publication references document nomenclature where the source supplies it. They do not establish evolutionary origins or the earliest fossil occurrence.

Specimen-level evidence, morphology, ecological research, phylogenetic studies, a comprehensive bibliography and a located literary passage have not yet been compiled for this record. A suitable sourced image remains to be added.

Dataset citation & attribution

This exact taxon in ChecklistBank · Catalogue of Life 2026-09-11

Catalogue of Life 2026-09-11; dataset 316321; doi:10.48580/dgz5n. https://creativecommons.org/licenses/by/4.0/ . Retrieved 5 October 2026.

Stable key: col:6MTPC. Classification follows source parent identifiers. English common names may vary by region.