I would be cautious about eating fish from Canyon Lake due to mercury https://tpwd.texas.gov/regulations/...ons/fish-consumption-bans-and-advisories
Fish Consumption Bans and Advisories
Fish and shellfish can accumulate contaminants from the waters in which they live. The Texas Department of State Health Services (TDSHS) monitors fish for the presence of environmental contaminants and alerts the public through bans (closures) and advisories when a threat to human health may occur from the consumption of contaminated fish.
In waters with consumption bans, both possession and consumption of fish and/or shellfish are prohibited. A consumption advisory is a recommendation to limit consumption to specified quantities, species and sizes of fish. For additional information and maps of areas listed here, as well as a listing of areas tested where no basns or advisories were issued, visit the TDSHS Seafood and Aquatic Life group, call (800) 685-0361 (shellfish) or (512) 834-6757 (fish), or e-mail firstname.lastname@example.org
Canyon Lake in Comal County
Chemical of Concern: Mercury â€¢For striped bass and longnose gar, adults and children 12 and older are advised to eat no more than two 8-ounce servings per month. Children under 12 should eat no more than two 4-ounce servings per month.
â€¢Pregnant women, women who could become pregnant and mothers who are breastfeeding are advised not to eat any striped bass or longnose gar from the lake.