G'Day Captain
No Creature Want's to Die, They all posess and Demontrate there ability to Fight for Survival.
Make any Noise at the River Side. The fish will immediately go into Alert Mode! Then You wonder why Your Not Catching Anything. Remember Fishing is in fact "Hunting" Therfore you should adapt to that mode yourself. Stealth and Cunning as well as Observation will Pay Dividends.
Consider how you would approach fishing, If you HAD to catch some fish to feed your Family,Rather that Arrive Home Empty Handed. Starved one day and the pressure is on you to Adapt a more Stealthy and Cunning Approach the next day. "Success Only Comes with a Degree of Effort".