Data / Federal rules / 2026-08146

Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for the Rayed Bean, Sheepnose, Snuffbox, and Spectaclecase Mussels

The Fish and Wildlife Service published this final rule in the Federal Register on April 27, 2026. It took effect on May 27, 2026.

SpecStream is the live web data engine for teams and agents. It reads every rule and proposed rule in the Federal Register each morning, and this page is that reading. Name your industry once and new rules, comment deadlines and effective dates arrive in your sheet, CRM, Slack or agent as they are published.

Get new rules for your industry

What the agency says

We, the U.S. Fish and Wildlife Service (Service), are designating critical habitat for the rayed bean (Villosa fabalis), sheepnose (Plethobasus cyphyus), snuffbox (Epioblasma triquetra), and spectaclecase (Cumberlandia monodonta), all species of freshwater mussel, under the Endangered Species Act of 1973, as amended (Act). Specifically, we designate approximately 599 river miles (rmi) (964 river kilometers (rkm)) in 15 units as critical habitat for rayed bean; approximately 801 rmi (1,289 rkm) in 11 units as critical habitat for sheepnose; approximately 2,425 rmi (3,902 rkm) in 38 units as critical habitat for snuffbox; and approximately 1,140 rmi (1,835 rkm) in 12 units as critical habitat for spectaclecase. Portions of these designations overlap among the four species; in total, approximately 3,814 unique rmi (6,138 rkm) of critical habitat within 76 units across 17 States (Alabama, Arkansas, Illinois, Indiana, Iowa, Kentucky, Michigan, Minnesota, Mississippi, Missouri, New York, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia, and Wisconsin) fall within the boundaries of the critical habitat designations.

Key facts

Document number: 2026-08146
Type: Final rule
Action: Final rule
Agency: Interior Department; Fish and Wildlife Service
Published: April 27, 2026
Takes effect: May 27, 2026
Dates: This rule is effective May 27, 2026.
Docket: Docket No. FWS-R3-ES-2024-0144; FXES1111090FEDR-267-FF09E21000
Regulation ID (RIN): 1018-BH73
Code of Federal Regulations: 50 CFR 17
Topics: Endangered and threatened species; Exports; Imports; Plants; Reporting and recordkeeping requirements; Transportation; Wildlife
Significant: Yes, under Executive Order 12866
Pages: 113

The document on federalregister.gov PDF

Other documents from the Fish and Wildlife Service

Document	Type	Published
Marine Mammals; Incidental Take of Polar Bears and Pacific Walruses in the Beaufort Sea and North Slope of Alaska 2026-21371	Final rule	Oct 19
Endangered and Threatened Wildlife and Plants; Four Species Not Warranted for Listing as Endangered or Threatened Species 2026-20315	Proposed rule	Oct 5
General Provisions; Revised List of Birds Protected by the Migratory Bird Treaty Act 2026-20123	Proposed rule	Oct 1
National Wildlife Refuge System; 2026-2027 Station-Specific Hunting and Sport Fishing Regulations; Correction 2026-19723	Final rule	Sep 25
Endangered and Threatened Wildlife and Plants; Removal of Gila Chub From the List of Endangered and Threatened Wildlife 2026-18470	Proposed rule	Sep 10
Endangered and Threatened Wildlife and Plants; Nine Species Not Warranted for Listing as Endangered or Threatened Species 2026-18123	Final rule	Sep 4
National Wildlife Refuge System; 2026-2027 Station-Specific Hunting and Sport Fishing Regulations 2026-17895	Final rule	Sep 1
Process for Authorizing Seasonal Migratory Game Bird Hunting 2026-17733 · significant	Final rule	Aug 31

Everything from the Fish and Wildlife Service · Rules on endangered and threatened species · Rules on exports · Rules on imports · Published in April 2026

Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.