The top one is a male.
the bottom one is a female.
you want to keep 1 male to 3 females .
And yes all frogs can pass coco fiber or eco earth that is the main reason to use it since most frogs eat a small amount of substrate each time they go for a
pray item.
so don't worry.
when my pep was much younger his poop was almost all eco earth. LOL but as he got older he got better aim.