Atherinopsis californiensis
Jacksmelt
i
2026-08-05: itis_id 166012 via WoRMS external link
Atherinopsis californiensis, the jack silverside or jacksmelt, is a species of neotropical silverside native to the Pacific coast of North America from Oregon, United States to southern Baja California, Mexico. This species often grows to 49 cm, but specimens of 55 cm (22 in) in total length have been reported.W CalCOFI holds 454 observations of it in 1 dataset between 1960 and 2023, as larva.R
- 454
- observations
- 454
- records
- 454
- sampling events
- 1960–2023
- years
- 1
- datasets
- larva
- life stages
- 45 cm
- max length
Observed in 1 dataseti
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.
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.
-
name used: Atherinopsis californiensis Jacksmelt · code
173
Ways inExplorerdb-queryERDDAPRPythonThis page as JSON
Code and endpoints ERDDAP · R · Python · JSON
library(calcofi4r) con <- cc_get_db() # the promoted release tbl(con, "obs_bio") |> filter(taxon_key == "worms:279813")
import calcofi4py as cc
con = cc.cc_get_db()
con.sql("SELECT * FROM obs_bio WHERE taxon_key = 'worms:279813'").df()Read from taxa.json of release v2026.10.20, written at release by calcofi4db::build_taxa_catalog(). The catalog's index is /species/.
How big is it 45 cm max · egg 1.9–2.5 mm
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 13 ranks · Biota to Atherinopsis
Credits silhouette · photo · text · length · plate
- Silhouette · lilychughes · CC0 1.0 · PhyloPic, drawn from Odontesthes · source
- Photo · Vince Golder · CC BY-NC 4.0 · inat · source
- Text · Wikipedia, “Jack silverside” · CC BY-SA 4.0 · revision 1362847246
- 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
The same organism on the services the faces were fetched from; the authorities' own pages are the ids in the head.
Cite the release, v2026.10.20
Cite the release, v2026.10.20; each dataset's own citation, licence and DOI are on its page. How to cite ↗