Directions: Read the passage and answer the question.

Long ago, there lived a family of fisherman, in a village near the sea. The father was very cruel and he used to rule the household. All the family members obeyed his commands. Lisa, the youngest daughter, was sent to the forest each day to gather wood for the kitchen fire. Near the edge of the forest was a cave under some rocks. A stream of water fell over the rocks into a basin in the cave. This was a delightfully cool place, and Lisa often rested here on her way home after gathering wood in the forest. She would lie on the mossy bank of the stream for hours and dream. One morning, as Lisa ran along the grassy path that led to the cave, she saw a little fish in the stream. Its scales flashed out all the colours of the rainbow."I am going to keep the fish for a pet," said the girl to herself. "I will call it Rainbow." She caught the pretty fish and put it into the basin in the cave and served it food everyday. So, she got a new friend.

What did Lisa see in the stream?