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CDFW monitoring shows mixed Clear Lake hitch counts; carp and goldfish removals expand
Summary
California Department of Fish and Wildlife field staff described three survey methods used to track Clear Lake hitch, said counts have fluctuated year-to-year, and reported that carp and goldfish removal efforts are expanding to reduce predation and support in-lake spawning.
Ben Ewing, a CDFW biologist, reviewed CDFW’s three monitoring programs for Clear Lake hitch: weekly visual surveys at 21 fixed sites across seven tributaries, a mark–recapture relative population estimate performed at four in-lake sites, and a general fish survey at 18 randomly selected lake locations. He said the department has run the visual surveys since 2014 and the in-lake mark–recapture sampling since 2019.
Ewing said field crews began the season the day of the meeting and “we almost…
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