Santiago is as determined as ever to kill the fish but he also has some mixed feelings what are the other feelings he is having towards the fish?

SAntiago loves the fish. At points in the story he doesn't feel worthy of such a majestic creature. He even ponders sacrificing his own life. The Fish is majestic, strong and graceful. The fish reminds Santiago of what he used to be as well the fish is a metaphor for Santiago's beautiful mistress which is the sea itself.