I've heard that coelacanths are not particularly palatable, at least to humans.
It's not a coelacanth, it's a dunkleosteus. The question about its edibility is still relevant though.
700FISH200800400200Dahuang drew in the spring of the year of the metal ox
"Metal ox" being the 38th year of the sexagenary cycle, means 2021 in this text.