Since this spring I have caught 5 or 6 smallmouth that were humpbacked. I have caught them in years past but this year seems a little extreme. I have read electo shock, parasites ect can cause this. Any thought on the matter? I had 1 that weighed 3 pounds and was around 14 inches. If I had whopped him in the spine with a hammer he would have been 17 inches.