Just came across a specific type of art called Gyotaku where specific types of ink are used to paint over one side of a fish and then a paper (rice paper, shoji paper, ...) is placed on top in order to retrieve the fish impression. After the impression, the ink is removed with water.
As catching the fish just to print doesn't seem worthy, I am wondering if there there safe types of ink that let's one eat the fish afterwards? Will washing it fully remove the ink?
Is it safe to eat the fish if one uses acrylic paints?
What kind of inks should one avoid?
Here's a video of an artist painting a oni, washing the ink out and then eating it. It is not clear if the ink is absorbed by the fish before he eats it or not. He states that he uses water-based acrylic and that it is water soluble and washable.