The Devil Fish is a divine fish living in the Arctic Ocean. He has numerous jobs:

with his spirit he creates the clouds, rain, and aurora borealis
in the spring he sends from his stomach anadromous fish shoals
he splashes with his tail to start off dolphins which drive fish shoals in front of them
the seers descend to him

Toivo Lehtisalo, a Finnish ethnologist, learned all this from a Samoyed shaman.