Species · accepted · checked 2026-08-05

Derichthys serpentinus

Longneck eel

WoRMS 126291ITIS 161601key worms:126291

2026-08-05: itis_id 161601 via WoRMS external link

Silhouette · Richard Harris · Public Domain Mark · PhyloPic, drawn from Monognathus

Longneck eel40 cm

bongo net ring71 cm

max · worms_attribute

Photograph of Derichthys serpentinus — Photo · David Starr Jordan , no known copyright restrictions (public domain) · Public domain · inat

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

Observed in
i
One row per dataset, 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.

Ichthyoplankton 2 obs · 2 events · 1959–2002 · larva
name used: Derichthys serpentinus Longneck eel · code 1025

How big is it
i
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.

Ways in
i
Read from taxa.json of release v2026.09.11, written at release by calcofi4db::build_taxa_catalog(). The catalog's index is /species/.

Explorer db-query

ERDDAPCalCOFI's own server, the Ichthyoplankton table constrained to this taxon

https://erddap.calcofi.io/erddap/tabledap/swfsc_ichthyo.html?&taxon_key=%22worms:126291%22

Derichthys serpentinus

How big is itiEvery 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.

Ways iniRead from taxa.json of release v2026.09.11, written at release by calcofi4db::build_taxa_catalog(). The catalog's index is /species/.

How big is it
i
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.

Ways in
i
Read from taxa.json of release v2026.09.11, written at release by calcofi4db::build_taxa_catalog(). The catalog's index is /species/.