Derichthys serpentinus
Longneck eel
i
2026-08-05: itis_id 161601 via WoRMS external link
The narrownecked oceanic eel, Derichthys serpentinus, is a longneck eel, the only species in the genus Derichthys, found in all oceans in depths between 500 and 2,000 m. Their length is up to 40 centimetres.W CalCOFI holds 2 observations of it in 1 dataset between 1959 and 2002, as larva.R
- 2
- observations
- 2
- records
- 2
- sampling events
- 1959–2002
- years
- 1
- datasets
- larva
- life stages
- 40 cm
- max length
Observed in 1 dataseti
One row per dataset, and beside it one cell per year, darker with more observations — the same
strip the front door draws per dataset. Each row ends with the name that dataset uses
(dataset_taxon); the accepted name is written once, in the title above. A quiet
pill marks a name the authority does not accept.
i
One row per dataset, and beside it one cell per year, darker with more observations — the same strip the front door draws per dataset. Each row ends with the name that dataset uses (dataset_taxon); the accepted name is written once, in the title above. A quiet pill marks a name the authority does not accept.
-
name used: Derichthys serpentinus Longneck eel · code
1025
Ways inExplorerdb-queryERDDAPRPythonThis page as JSON
Code and endpoints ERDDAP · R · Python · JSON
library(calcofi4r) con <- cc_get_db() # the promoted release tbl(con, "obs_bio") |> filter(taxon_key == "worms:126291")
import calcofi4py as cc
con = cc.cc_get_db()
con.sql("SELECT * FROM obs_bio WHERE taxon_key = 'worms:126291'").df()Read from taxa.json of release v2026.10.19, written at release by calcofi4db::build_taxa_catalog(). The catalog's index is /species/.
How big is it 40 cm max
Every mark is a measured length with its own source — hover one to read it. The reference objects are _data/size_reference.csv: two of them, the 505 µm bongo mesh and the net's ring, are CalCOFI's own sampling gear.
Life stages larva
- Ichthyoplankton larva
The stages each dataset records for it, from the release's obs_bio.life_stage. Their lengths are under How big is it.
Lineage 12 ranks · Biota to Derichthys
Credits silhouette · photo · text · length
- Silhouette · Richard Harris · Public Domain Mark · PhyloPic, drawn from Monognathus · source
- Photo · David Starr Jordan , no known copyright restrictions (public domain) · Public domain · inat · source
- Text · Wikipedia, “Narrownecked oceanic eel” · CC BY-SA 4.0 · revision 1362842541
- Length · worms_attribute
Elsewhere Wikidata · iNaturalist · FishBase · GBIF
WikidataiNaturalistFishBaseGBIF
The same organism on the services the faces were fetched from; the authorities' own pages are the ids in the head.
Cite the release, v2026.10.19
Cite the release, v2026.10.19; each dataset's own citation, licence and DOI are on its page. How to cite ↗