Personification I believe
I think it is a pay up gester to let them know she needs extra money.
Answer:
He is a good spirit who will protect and bring happiness to the fisherman and his wife
Explanation:
the phrase "spoke kindly to the fisherman and his wife" is indicative of the good nature of the boy and so, he'll bring happiness to the couple.
Hope this helps, and please mark me brainliest if it does!