Nesiarchus nasutus
Black gemfish
i
2026-08-05: itis_id 172370 via WoRMS external link
Nesiarchus nasutus, the black gemfish or violet snake mackerel, is a species of snake mackerel found in tropical and subtropical waters in most parts of the world, though not in east Pacific and north Indian waters.W CalCOFI holds 1 observations of it in 1 dataset between 2006 and 2006, as larva.R
- 1
- observations
- 1
- records
- 1
- sampling events
- 2006
- years
- 1
- datasets
- larva
- life stages
- 1.3 m
- 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.
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name used: Nesiarchus nasutus Black gemfish · code
2230
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:126865")
import calcofi4py as cc
con = cc.cc_get_db()
con.sql("SELECT * FROM obs_bio WHERE taxon_key = 'worms:126865'").df()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 1.3 m max
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 Nesiarchus
Credits silhouette · photo · text · length
- Silhouette · Russell Engelman · CC BY 4.0 · PhyloPic, drawn from Ruvettus pretiosus · source
- Photo · G. H. Ford, no known copyright restrictions (public domain) · Public domain · inat · source
- Text · Wikipedia, “Nesiarchus nasutus” · CC BY-SA 4.0 · revision 1314990158
- Length · worms_attribute
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, v2026.10.19
Cite the release, v2026.10.19; each dataset's own citation, licence and DOI are on its page. How to cite ↗