while in school we had to disect dogfish. I hate the smell of formeldihyde ( I forgot how to spell it!)
So I asked the teacher if I could bring in a fresh one, he said alright but it would be harder to identify the nerves and veins as the preserved doggy's were injected with die.
My fish ended up being the class study because after many years of dogfish torture I learned that I could put my left hand on top of the fishes head and grab the nose with my right really tight and twist it off exposing the entire brain, optic nerves (eyes included), and ofactory nerves without any damage to them.
I wonder if my teacher still uses that technique?