I know most of us are catch and release fishermen, but I know some folks do enjoy eating their catch. Sadly, Canyon Lake, and many lakes in Texas, are heavily affected by heavy metal pollution. There are numerous warnings thorough the state of Texas on certain fish and lakes. Here is the TPWD advisory for Canyon Lake, taken from the TPWD website on 05/09/12:
Canyon Lake in Comal County
Chemical of Concern: Mercury
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.
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.