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

Chauliodus macouni

Pacific viperfish

WoRMS 275055ITIS 162279GBIF 5203199key worms:275055
i

2026-08-05: itis_id 162279 via WoRMS external link

Silhouette · César Camilo Julián Caballero · CC BY 3.0 · PhyloPic, drawn from Chauliodus danae
Pacific viperfish25.4 cm
bongo net ring71 cm

max · worms_attribute

Head of a pacific Viperfish caught during trawling operations. Image ID: fish4036, NOAA's Fisheries Collection Location: Alaska, Southeast Photo Date: 2001
Photo · David Csepp, NMFS/AKFSC/ABL · Public domain · commons

The Pacific viperfish (Chauliodus macouni), is a predatory deep-sea fish found in the North Pacific. It is reported as being either mesopelagic or bathypelagic, with diel vertical migration to shallower waters.W CalCOFI holds 2,878 observations of it in 2 datasets between 1951 and 2023, as larva.R

2,878
observations
2,878
records
2,878
sampling events
1951–2023
years
2
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 2,865 obs · 2,865 events · 1951–2023 · larva
    name used: Chauliodus macouni Pacific viperfish · code 156
  • Mesopelagic Fish 13 obs · 13 events · 2010–2012
    name used: Chauliodus macouni · code Chauliodus macouni

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 Ichthyoplankton table constrained to this taxon
https://erddap.calcofi.io/erddap/tabledap/swfsc_ichthyo.html?&taxon_key=%22worms:275055%22