Field Notes
U.S. Fish & Wildlife Service
Field Notes Entry   
Spawning logperch at Genoa National Fish Hatchery
Midwest Region, April 6, 2020
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Logperch developing in an egg at Genoa National Fish Hatchery.
Logperch developing in an egg at Genoa National Fish Hatchery. - Photo Credit: Photo by Megan Bradley/USFWS.

If you’ve been keeping up with hatchery goings-on then you remember that we brought in some logperch from U.S. Geological Survey's Columbia Environmental Research Center back in December. Logperch are a primary host for the federally endangered snuffbox mussel, a member of the genus Epioblasma, the most endangered genus of freshwater mussels and one of the most amazing since the mussels in it catch their host fish in order to infest them with their larvae.

Not only do we want to produce snuffbox at the hatchery, but we’d like to be able to continue to raise them by maintaining a population of their host fish. We’ve started down this path by spawning them. We have thousands of fertilized eggs developing now and some have reached a stage where you can see the young fish in the eggs. If we’re successful, when they hatch these tiny fish will go into a pond where they can eat zooplankton and then insect larvae as they grow over the summer and we’ll have plenty of fish to host snuffbox larvae for next year as well.

Contact Info: Megan Bradley, (608) 689-2605, megan_bradley@fws.gov
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