CalCOFI.io CalCOFI.io open data ecosystem
Species · accepted · checked 2026-08-05

Chiasmodon niger

black swallower

WoRMS 126840ITIS 171086key worms:126840
i

2026-08-05: itis_id 171086 via WoRMS external link

Silhouette · Nathan Hermann · CC0 1.0 · PhyloPic, drawn from Pomatomus saltatrix
black swallower25 cm
bongo net ring71 cm

max · worms_attribute

Photograph of Chiasmodon niger
Photo · anonymous, no known copyright restrictions (public domain) · Public domain · inat

The black swallower is a species of deep sea fish in the family Chiasmodontidae. It is known for its ability to swallow fish larger than itself.W CalCOFI holds 2 observations of it in 1 dataset between 2010 and 2011.R

2
observations
2
records
2
sampling events
2010–2011
years
1
datasets

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.

  • Mesopelagic Fish 2 obs · 2 events · 2010–2011
    name used: Chiasmodon niger · code Chiasmodon niger

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/.

Explorerdb-query
ERDDAPCalCOFI's own server, the Mesopelagic Fish table constrained to this taxon
https://erddap.calcofi.io/erddap/tabledap/sio_mesopelagic-fish.html?&taxon_key=%22worms:126840%22