Most of them are made from watercolored tissue paper, mod podge, and ink. On the two with larger salmon I watercolored the salmon first. These don't really get the full texture, which is actually what I like best about them. They are very textured.
Also, I'm reconsidering getting a salmon tattoo. I wanted to get one a couple years ago, just a little one some place discreet Keep it stylized. Then when I told someone that, they got very negative and critical about fish tattoos in general. But now I'm reconsidering it.