Yes, a good illustration of this handsome little critter. I think a little bit too early for a European silkscreen print. I'd say it started out as a woodcut or other engraved printing technique to cover those bigger solid areas.
Thanks for the link to the club, if I lived near Fürth I'd probably join! Have you looked up any additional photos of batfish? They look like aquatic aliens and are prone to having heart attacks if things get too hectic in their environment, no kidding ...
Geoff, did you have a juvenile or adult fish? The color patterns on some of them are rather psychedelic. What kind of fish did you keep yours with?
Have you looked up any additional photos of batfish? They look like aquatic aliens and are prone to having heart attacks if things get too hectic in their environment, no kidding ... 
