I must say there was a great potential for a meme to be used here.
Anyways my bigger point of the reply is fish? I mean dogs, mice, cats... those make sense on how the experiment would work but fish?

Later, Thorndike repeated the experiment with fish, chickens, and dogs. I will leave the question how he made that work to your imagination

I think I will look into how he got fish to cooperate...
Anyways very good post, quite enjoyed it!