let me start by saying that i don't claim to have any great knowledge on the subject. but i have had a 200 gallon fish tank filled with some bass bluegills and crappies for the past three years and in all the time I've spent watching the fish I began to notice how little most of the poses seen in commercial fish taxidermy and reproductions don't resemble natural body positions and actions. for instance i can't recall seeing any of my fish in a dramatic tail and head down arch diving down or up. they generally hold a fairly straight form even when change depths. i guess the question I'm trying to get out is this. if taxidermy is the art of recreating fish, animals, birds etc... in their natural form then why do we see so many mounts in unnatural poses. again I'm not trying to say I'm an expert on the fish anatomy. I'm just hoping somebody with a little more knowledge on anatomy and physiology could explain to me if the poses are possible and natural or is just the artist making the subjects pose fit his or her idea and composition.