When the flood begins, Manu boards the boat and then prays to the fish Matsya for assistance. The fish then appears and ties the boat to a horn that has grown on its head. It uses the serpent Vasuki as the rope to tie the boat to its horn. The fish then tows this boat to safety and takes Manu to the highest and driest point left on the earth.
There is also a yoga position called Matsyana, the fish:
India; approxamitely 3. Century AD; Hindu; Animals; Story