Don,
"Remember these guys like all herbivores’ fish do not have a stomach, but instead an organ called the pyloric caecae a very long "midgut" sort of a long intestine. These fish do not use hydrochloric acid in the breakdown of plant material but use an enzyme and specialized bacteria for digestion. Nutrients are absorbed during a long exposure digestion in this midgut. The pancreas is the main source of this enzyme and is located adjacent to the midgut and is very small or even diffuse, (broken into small units or collections of pancreas cells interwoven amongst the pyloric caecae)."
What I remember are somewhat different from your findings. Although enzyme such as Trypsin produced by Pancreas, other enzymes such as lamiraninase, amylase, cellulase, etc, etc. ring a bell, it was my understanding that not all herviores had same gastrointestinal structures. What I remember is that stomach is present but in different structures with gland cells which produces HCl present.
Even within same family, it may differ from genus to genus and/or species to species.
And legnth of GI tract was the big difference from carnivores and hervirores.
You said our studies? Involved with Fish pathology grad program or perhaps with industry?
Can you provided links to abstracts in reference to your statements.
When it comes to new facts/data, I am very aggressive. LOL!
Thanx in advance for links.