"While the diamiarm usually digest the spores produced by Maineiac Water Table's flora." There should be a comma after that.
"much more different" Surely you meant "much different" in this context? Unless you're comparing it to to other descendants which have differing levels of...difference from their ancestors, "much different" is appropriate.
"to a more primitive state" That sounds a little like "evolving backwards", which is impossible. Certainly, organisms can have atavisms, but it's good to be more precise in your wording. Earlier organisms are not necessarily more "primitive"; the word has some negative connotations. The ancestor of the dodos, which could fly, wasn't superior to flightless dodos.

I like how variable the Maineiac Water Table is getting on the macro level.

I wonder if these will ever evolve to be able to take on larger prey with their long villi.