A SatyaYuga Avatar
When the world was at the brink of extinction Manu was instructed by God to rescue the life form on earth, he chooses 1 male and 1 female from every species, also collects plants of different species and loads them all on the big ship he had already built. The whole world was washed up in rain and as a result there was no land to stay.
A fish (matsya) with horns comes to the rescue. The ship was tied to the horn of the fish, the fish pulls the ship with great speed towards the himalayas where there was a small island for all the life forms to gradually grow and increase in number.
Note: Story of Noah's Ark from the genesis is very much comparable to this. Apparently there is a similar story in many civilizations like Sumer and Babylonia, Greece, the Maya and the Yoruba .