So I got the bluegill and redear delivered a few weeks ago. I now have a blue heron that has taken up residence at my pond. He is getting the very few dead fish, and maybe a few of the ones I see close the edge that are about to die. Again, very few fish that have died or look sick. My question is should I be concerned about the healthy fish? Can the blue heron get the healthy fish? Banks are 3:1 down to 12 feet deep. I do have a spawning area that is 3 feet deep but has a lot of fish structures for hiding. Thought about getting a decoy, anyone have success with one? Any advice would be appreciated. Thank you.