Twik, please don't get me started.
What the novice snorkeler said was considerably more spicy than the word for which 'carp' is a euphemism. Still, there can be fun connections between the holy and fish.
As I recall, the 'hali' in halibut is a reference to 'holy'.
I also recall a television ad from the time of 'Jaws' encouraging people tto 'GET EVEN! EAT FISH'.
It included an animated procession of monkfish. As they slowly moved across the screen,
they solemnly intoned, 'Filet of Sole, oh filet of sole'.
You never know what you're going to find or where you're going to find it.