Introduced trout contributed to decline of Sierra Nevada yellow-legged frogs
California stocked mountain lakes with trout from 1870 to 1988, and the introduced fish helped displace yellow-legged frogs across much of their historic Sierra Nevada range. The frogs were pushed from 92% of that range.
By DoomRadar · Published on DoomRadar .
Why it matters
The large-scale loss of habitat and native amphibian populations represents a significant, long-term ecological impact.
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- From 1870 to 1988, California stocked mountain lakes with trout for anglers; the fish helped push yellow-legged frogs from 92% of their historic Sierra Nevada range ↗timesofindia.indiatimes.com · Recorded source date: Sep 12, 2026, 9:46 PM UTC
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