It sort of worked to watercolor over the fish print even though it was water based block printing ink and not oil based. I tried to paint in between the lines and didn't use too much water which kind of prevented the black from smearing. If I print more of these I will definitely buy some oil based ink first. I started painting another one of these with just two colors of fish but I think I like this one better.
I was also thinking that I might attempt to carve two additional blocks, one for the fishes and one for the background and block print them instead of filling in the fish with water colors. It would end up looking kind of like my tidepool print that I screen printed in my screen printing class I took at Angel's Gate last year. Actually I could do a reduction where I printed a solid background in a light color first and then carve out all the negative space and print the fish in a darker color and then use this block to print the details of the fish in black.