CalCOFI.io CalCOFI.io open data ecosystem

Macropinna microstoma

Barreleye

Speciesaccepted · checked 2026-08-05WoRMS 281482ITIS 162101key worms:281482
i

2026-08-05: itis_id 162101 via WoRMS external link

The Pacific barreleye fish (Macropinna) is a genus of ray-finned fish belonging to Opisthoproctidae, the barreleye family. It contains one species, M. microstoma.W CalCOFI holds 2 observations of it in 1 dataset between 1974 and 1975, as larva.R

2
observations
2
records
2
sampling events
1974–1975
years
1
datasets
larva
life stages
15 cm
max length
Photograph of Macropinna microstoma
Photo · Kim Reisenbichler · CC BY-SA 4.0 · 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.

  • 2 obs2 events1974–1975larva
    name used: Macropinna microstoma Barreleye · code 53

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:281482%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 · transformation 21–24 mm
Barreleye15 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 Macropinna
Credits silhouette · photo · text · length · plate
  • Silhouette · T. Michael Keesey · Public Domain Mark · PhyloPic, drawn from Winteria telescopa · source
  • Photo · Kim Reisenbichler · CC BY-SA 4.0 · inat · source
  • Text · Wikipedia, “Macropinna” · CC BY-SA 4.0 · revision 1372333575
  • 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 · 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 ↗