This is a painting of St. Simeon Verkhotursky fishing.
[FLH comment] This painting appears to be showing the saint fishing with Jesus standing on the opposite bank, which would be counter to Scripture, because Jesus called the disciples away from fishing to become fishers of men. Also, why would any true follower of God want to kill any other living being.
[YK Comment] Saint is fishing, not Jesus. Icons don't recognize space and time, so St. Simeon Verkhotursky is depicted two times in that icon - standing and fishing. Saint is image of Jesus. Fishing is OK - apostles were fishermen. However, the icon shows spiritual river and spiritual fishing.