looking for a fish swimming frames

hi

i am looking for a fish swimming frames, but i need the fish to swim in circles with a minimum radius, so like he is constatnly turning his body 

https://www.youtube.com/watch?v=aSVCHEXAZeE

here is an example. but in my animation the fish is seen from above angle, and i am really having a hard time to mimic the correct movement