let me give you a good tip to taking pics of a moving object.....if you have a droid and Im sure icrap does it also ....take a video of the moving object then play the video then use the phone and pause it right where you want the best pick and take a pick from the video and BAM you have the best shot possible as video will capture every movement of the fish then just get the angle and close up pic you want pulled from the video
ps works for all those family pics also when you have 10 people all not looking or smiling at the same time or kids.....take a short 10 sec video then take pics from the video