Very good read Mark!
I take exception to:
complex carbohydrates cannot be digested and utilized efficiently by most finfish species. A general dichotomy exists in the carbohydrate digestive ability of warmwater omnivores and herbivores versus the inability of coolwater and coldwater carnivores, which lack the appropriate function necessary for digestion of carbohydrates.
For many years I bound my aquarium food using egg whites. This gave me the highly sought after high ground concerning the use of carbohydrates as a binder. I finally did some testing on tropical carnivores and found that they could use at least 15% energy derived from carbohydrates. I can't speak to cold water carnivores but as for warm water carnivores its simply not true.
Looking forward to hearing what Mr. Lusk's trial reveals.