Teach your baby the sign for the word fish in baby sign language with the following description and video.
Hold the hand in front of the body with the palm facing the chest. Wiggle the hand back and forth in the motion of a fish swimming.
Beyer, Monica. 2006. Baby talk: A guide to using basic sign language to communicate with your baby. New York: Jeremy P. Tarcher/Penguin.
Porpora, Tracey. 2011. The complete guide to baby sign language: 101 trips and tricks every parent needs to know. Ocala, FL: Atlantic Publishing Group, Inc.