Species · accepted · checked 2026-08-05

Girella nigricans

Opaleye

WoRMS 280865ITIS 169515key worms:280865

2026-08-05: itis_id 169515 via WoRMS external link

Silhouette · perevolotsky · CC0 1.0 · PhyloPic, drawn from Microcanthus strigatus

Opaleye66 cm

bongo net ring71 cm

max · worms_attribute

Girella nigricans at the Birch Aquarium in San Diego, California, USA. — Photo · Stickpen · Public domain · commons

Girella nigricans, commonly known as the opaleye or rudderfish, is a species of sea chub found in the Eastern Pacific, from California to southern Baja California. A rarely documented isolated population also exists in the Gulf of California, which might be genetically different from the rest of the species.W CalCOFI holds 221 observations of it in 1 dataset between 1951 and 2022, as larva.R

221
observations: 221
records: 221
sampling events: 1951–2022
years: 1
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 221 obs · 221 events · 1951–2022 · larva
name used: Girella nigricans Opaleye · code 656

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/.

Explorer db-query

ERDDAPCalCOFI's own server, the Ichthyoplankton table constrained to this taxon

https://erddap.calcofi.io/erddap/tabledap/swfsc_ichthyo.html?&taxon_key=%22worms:280865%22

Girella nigricans

How big is itiEvery 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 iniRead from taxa.json of release v2026.09.11, written at release by calcofi4db::build_taxa_catalog(). The catalog's index is /species/.

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/.