Species Profile
Environmental Conservation Online System

Least chub (Iotichthys phlegethontis)

Kingdom: Animalia
Class: Actinopterygii
Order: Cypriniformes
Family: Cyprinidae

Listing Status:   

Map of Species occurrence

For the best experience, make sure that javascript is enabled and that you have the Adobe Flash Player installed Click here to download and install the Flash Player

Click here to see static map image

Map Image Map of Species occurrence Map of Species occurrence

This map represents our best available information about where a species is currently known to or or is believed to occur; however, it should NOT be used as an official species list for Section 7 Consultation purposes. To obtain an official species list for this purpose, please visit the Information, Planning, and Conservation (IPaC) System (click here: http://ecos.fws.gov/ipac)



  • States/US Territories in which the Least chub is known to or is believed to occur:  Utah
  • US Counties in which the Least chub is known to or is believed to occur:  View All
  • USFWS Refuges in which the Least chub is known to occur:  FISH SPRINGS NATIONAL WILDLIFE REFUGE
Current Listing Status Summary
Status Date Listed Lead Region Where Listed
Mountain-Prairie Region (Region 6)

» Candidate Information

Current Candidate Status

Listing Priority: 7
Magnitude: Moderate to Low
Immediacy: Imminent
Taxonomy: Monotypic genus
Species Assessment: Species Assessment Form for the Iotichthys phlegethontis -- 288Kb
Candidate Notice of Review Documents (Showing 5 of 10: view all)
Date Citation Page Title
11/21/2012 77 FR 69993 70060 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
10/26/2011 76 FR 66370 66439 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
11/10/2010 75 FR 69222 69294 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule
09/19/1997 62 FR 49398 49397 Review of Plant and Animal Taxa
02/28/1996 61 FR 7597 7613 ETWP; Review of Plant and Animal Taxa That Are Candidates for Listing as Endangered or Threatened Species

» Federal Register Documents

Most Recent Federal Register Documents (Showing 5 of 16: view all)
Date Citation Page Title
11/21/2012 77 FR 69993 70060 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
10/26/2011 76 FR 66370 66439 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
11/10/2010 75 FR 69222 69294 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule
06/22/2010 75 FR 35398 35424 12-Month Finding on a Petition to List the Least Chub as Threatened or Endangered
10/15/2008 73 FR 61007 61015 90-Day Finding on a Petition To List the Least Chub (Iotichthys phlegethontis) as Threatened or Endangered With Critical Habitat

» Conservation Plans

Candidate Conservation Agreements (CCA): (learn more) (Showing 1 of 1)
CCA Plan Summaries
Least chub

» Petitions

Most Recent Petition Findings (Showing 4 of 4)
Date Citation Page Title Finding
11/21/2012 77 FR 69993 70060 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
  • Notice 12 month petition finding, Warranted but precluded
  • Notice CNOR
  • 10/26/2011 76 FR 66370 66439 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
  • Notice 12 month petition finding, Warranted but precluded
  • Notice CNOR
  • 06/22/2010 75 FR 35398 35424 12-Month Finding on a Petition to List the Least Chub as Threatened or Endangered
  • Notice 12 month petition finding, Warranted but precluded
  • 10/15/2008 73 FR 61007 61015 90-Day Finding on a Petition To List the Least Chub (Iotichthys phlegethontis) as Threatened or Endangered With Critical Habitat
  • Notice 90-day Petition Finding, Substantial
  • » Life History

    No Life History information has been entered into this system for this species.

    » Other Resources

    NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

    ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

    Last updated: June 18, 2013