CalCOFI.io CalCOFI.io open data ecosystem

Cyema atrum

Bobtail eel (small leaflike eel)

Speciesaccepted · checked 2026-08-05WoRMS 127164ITIS 161632GBIF 2415360key worms:127164
i

2026-08-05: itis_id 161632 via WoRMS external link

Cyema is a monospecific genus of marine ray-finned fish belonging to the monotypic family Cyematidae. The only species in the genus is Cyema atrum, the arrow eel, bobtail eel, bobtail snipe eel or deepwater eel.W CalCOFI holds 22 observations of it in 1 dataset between 1959 and 2014, as larva.R

22
observations
22
records
22
sampling events
1959–2014
years
1
datasets
larva
life stages
15 cm
max length
Photograph of Cyema atrum
Photo · anonymous, no known copyright restrictions (public domain) · Public domain · inat

Observed in 1 dataset
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.

  • 22 obs22 events1959–2014larva
    name used: Cyema atrum Bobtail eel (small leaflike eel) · code 367

Ways inExplorerdb-queryERDDAPRPythonThis page as JSON

Code and endpoints ERDDAP · R · Python · JSON
ERDDAPCalCOFI's own server, the Ichthyoplankton table constrained to this taxon
https://erddap.calcofi.io/erddap/tabledap/swfsc_ichthyo.html?&taxon_key=%22worms:127164%22

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 15 cm max
Bobtail eel15 cm
bongo net ring71 cm

max · worms_attribute

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 Cyema
Credits silhouette · photo · text · length · plate
  • Silhouette · Richard Harris · Public Domain Mark · PhyloPic, drawn from Monognathus · source
  • Photo · anonymous, no known copyright restrictions (public domain) · Public domain · inat · source
  • Text · Wikipedia, “Cyema” · CC BY-SA 4.0 · revision 1355297459
  • Length · worms_attribute
  • Plate · Matarese, Kendall, Blood & Vinter 1989, NOAA Tech. Rep. NMFS 80, via the AFSC Ichthyoplankton Information System · Public domain (US Government work) · noaa_iis · source
Elsewhere Wikidata · iNaturalist · FishBase

WikidataiNaturalistFishBase

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 ↗