Species · accepted · checked 2026-08-05

Clarkichthys bilineatus

flagtail wormfish

WoRMS 280208ITIS 637146key worms:280208

2026-08-05: itis_id 637146 via WoRMS external link

Silhouette · tmccraney · CC0 1.0 · PhyloPic, drawn from Ptereleotrinae

flagtail wormfish6.2 cm

US quarter2.4 cm

max · worms_attribute

Photograph of Clarkichthys bilineatus — Photo · Ted Judah · CC BY-NC 4.0 · inat NC

The flagtail wormfish is a species of wormfish native to the Pacific coast of the Americas from Mexico to Colombia as well as the Galápagos Islands. It is an inhabitant of tide pools and reefs being found down to a depth of about 8 metres (26 ft).W CalCOFI holds 2 observations of it in 1 dataset between 1992 and 2003, as larva.R

2
observations: 2
records: 2
sampling events: 1992–2003
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 2 obs · 2 events · 1992–2003 · larva
name used: Clarkichthys bilineatus · code 805

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:280208%22

Clarkichthys bilineatus

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/.