Colorado Parks & Wildlife conducts numerous annual studies of fish and amphibians. Among the topics they study are warmwater and coldwater fisheries; salmonid diseases; water pollution; whirling disease; habitat; mercury; fish telemetry; and more. Each summer the agency issues a number of reports on these and related topics. You can find recent years’ reports, along with selected topical journal articles, on their website. Our library also has print versions of these reports going back several decades; search our library’s web catalog for resources both online and in print.