text: Ahura Mazda sent these creatures to guard the tree of life in a Zoroastrian story.
full_question: Ahura Mazda sent these creatures to guard the tree of life in a Zoroastrian story. In a Cherokee creation myth, the first man hits the first woman with one of these animals, causing her to give birth every seven days. The god Enki had these animals as a symbol, and an avatar of Vishnu, Matsya took this form. One of these animals ate nine hazelnuts from the Well of Wisdom, leading to a drop of its fat giving all of the world's knowledge to Finn Mac Cool. For 10 points, name these animals exemplified by the Zodiac Pisces and the early Christian symbol Ichthys.
first_sentence: Ahura Mazda sent these creatures to guard the tree of life in a Zoroastrian story.