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90-Day Finding on Petition to List 10 Species of Giant Clams as Threatened or Endangered Under ESA


Endangered Species Act
Action Status
Proposed Rule


NOAA Fisheries announces our 90-day findings on a petition to list ten species of giant clam as endangered or threatened under the Endangered Species Act. Listing may be warranted for seven species:

  • Hippopus hippopus
  • H. porcellanus
  • Tridacna costata
  • T. derasa
  • T. gigas
  • T. squamosa
  • T. tevoroa

We will initiate status reviews of these seven species and request scientific and commercial information about them.

In addition, we found that the petition did not present substantial scientific or commercial information indicating that the petitioned action may be warranted for the other three petitioned giant clam species:

  • T. crocea
  • T. maxima
  • T. noae

Last updated by Office of Protected Resources on 07/25/2018