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Ichthyococcus irregularis

Bulldog lightfish

Speciesaccepted · checked 2026-08-05WoRMS 274954ITIS 622698GBIF 2346817key worms:274954
i

2026-08-05: itis_id 622698 via WoRMS external link

Bulldog lightfish, also known as Ichthyococcus irregularis, is a species of the genus Ichthyococcus.W CalCOFI holds 352 observations of it in 2 datasets between 1951 and 2023, as larva.R

352
observations
352
records
352
sampling events
1951–2023
years
2
datasets
larva
life stages
7.6 cm
max length
Silhouette · Yan Wong · CC0 1.0 · PhyloPic, drawn from Malacosteus niger

Observed in 2 datasets
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.

  • 348 obs348 events1951–2023larva
    name used: Ichthyococcus irregularis Bulldog lightfish · code 89
  • 4 obs4 events2010–2011
    name used: Ichthyococcus irregularis · code Ichthyococcus irregularis

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:274954%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 7.6 cm max · hatching 3–4 mm
Bulldog lightfish7.6 cm
US quarter2.4 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 Ichthyococcus
Credits silhouette · text · length
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 ↗