>>26715317Unpopular opinion apparently, but I think you could get away with calling Paras a crab that is acting as a host to a parasitic mushroom.
If you look at it in real life terms:
When a Coryceps fungus infects an ant, it is still an ant with a fungus. However the fungus eventually takes over the entire organism and it is a fungus living on the carcas of a dead ant, and therefore no longer a living insect.
See pic.
Because of this I've always considered Paras a terrestrial crab with a parasitic fungus and Parasect a parasitic fungus controlling the corpse of a terrestrial crab.