1. The fish head Pattern of the Rubik's cube
1st way: R U' R' U' R U'2 R'
2nd way: R U2 R' U R U R'

2. The Rubik's cube small fish pattern:
Option 1: Right side down, upper layer right, right side up, upper layer right, right side down, upper layer right twice, right side down
Option 2: Right side up, upper layer left twice, right side up, upper layer left, right side down, upper layer left, right side up