Can fish see directly behind them?

Can fish see directly behind them?

We’ve all been there. You spy a trout finning in the current, not too far off the bank, oblivious to your presence. A perfect target. Easy, even. You stand quiet and still, assess the current, watch the fish’s behavior to see if you can discern what it is or isn’t eating, and envision your cast. Only to make it, you’ll need to get a bit closer. The good news is, that shouldn’t be a problem. The fish is 40 or 50 feet upstream and barely a rod len…