Species · accepted · checked 2026-08-05

Diaphus theta

California headlightfish

WoRMS 272694ITIS 162584GBIF 2406199key worms:272694

191
observations: 191
sampling events: 1972–2022
years: 2
datasets: larva
life stages

Observed in

Ichthyoplankton 127 obs · 127 events · 1972–2022 · larva
name used: Diaphus theta California headlightfish · code 227
Mesopelagic Fish 64 obs · 64 events · 2010–2012
name used: Diaphus theta · code Diaphus theta

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.

Note from the crosswalk

2026-08-05: itis_id 162584 via WoRMS external link

Ways in

Explorermaps, sections and time series of this taxon — opens prefilled
https://calcofi.io/explore/?taxon=worms:272694
db-querySQL in your browser — the shell opens with this query
https://calcofi.io/db-query/?sql=SELECT+%2A+FROM+__TBL%3Aobs_bio__+WHERE+taxon_key+%3D+%27worms%3A272694%27+LIMIT+100%3B
ERDDAPCalCOFI's own server, the Ichthyoplankton table constrained to this taxon
https://erddap.calcofi.io/erddap/tabledap/swfsc_ichthyo.html?&taxon_key=%22worms:272694%22

library(calcofi4r)
con <- cc_get_db()                      # the promoted release
tbl(con, "obs_bio") |> filter(taxon_key == "worms:272694")

Python

import calcofi4py as cc
con = cc.cc_get_db()
con.sql("SELECT * FROM obs_bio WHERE taxon_key = 'worms:272694'").df()

This page as data

JSONthis taxon's entry of the release record, verbatim
https://calcofi.io/species/worms-272694.json

Read from taxa.json of release v2026.09.06, written at release by calcofi4db::build_taxa_catalog(). The catalog's index is /species/.