Following.
We've also been thinking-through a snorkeler's fish-food stick that can be made & packaged by fishing communities & sold to/through hotels.
Heads/skin/guts & macroalgae in a course blend/slurry, with home-grown agar/carrageenan or egg-white as binder to be sun-dried to consistancy then frozen for parasites. Likely sold in a little biodegradable plastic tube loosely frozen with break-striations like a chocolate bar.
Thinking similar for my arowana based on whole crickets & roaches.
Recepies for this sort of thing were all over the old LOL (Loaches Online) forum, but not seen much since; no offense intended, but loach-people appear to be better "geeks" than you monster-lot