[2] The life cycle remains unknown but cercariae probably develop in mollusks, most likely gastropods.
[4] Griphobilharzia amoena are dioecious and are found in the circulatory system of their definitive host, Crocodylus johnstoni.
Females are oriented anti-parallel to the males and are completely enclosed in the gynecophoric chamber.
[5] It was also predicted that since Griphobilharzia amoena originated in ectotherms and then inhabited endothermic avian species, which is where they exist today.
However, upon analysis it was discovered that Griphobilharzia amoena is actually more closely related to spirorchiids from freshwater turtles rather than to schistosomes.