If I am intending to eat a fish (there are several delicious freshwater species and practically all sea fish) then I kill it immediately using a proper 'priest'. This is a wooden truncheon with lead inside it. Traditionally you hit the fish on the head three times but the first blow usually kills, or at least stuns, it.

The name derives from the fact that it is used to administer the 'last rites'.

A quote from Paul McCartney..." what has eyes, one does not eat"and yes he is a vegetarian. I like it. However I do eat fish, eggs and chicken. No pork and very little red meat for the past 2 years. I'm eating more miso/tofu dishes now.