I found these instructions. Free Kids Crafts - Ribbon Fish
Don't know how easy they are to follow.
Wendy (punkynmunky on etsy Woven Fish Tutorial PDF by punkynmunky on Etsy
) sells her instructions.
I bought her firecraker instructions and they are great but I don't have the fish ones....but I'm sure they are as detailed. And her prices are very reasonable.