i don't have a lot of experience with identifying parasites other than what i had myself in my family.. whipworm and pinworm i am good at picking out, but i've never seen anything else personally... just on the internet and in books.
there are members here who know about a lot of different parasites that we don't even know about or that are uncommon, so once they come along, they might be able to tell you.
the branches are definitely different. it makes me wonder if it's a molted skin? some parasites are identified by their mouth or skin.
fasting is ok, but you want to keep water or juice in you. salt water every now and then too.
if your bowels get blocked, that leads to trouble!