Now it's easier to diagnose with those three pictures...
Dad: definitely a red grass.
Mum: hard to tell with the badly damaged fins.
Fry: definitely not grass.
Very interesting though, since their entire body is covered in blue, up to their heads.
Considering the moscow trait is Y-linked, it would say their dad is a moscow.
(happy for someone else to comment)
The mum might still be grass, but the only way to find out for sure is to breed her with a grass male.
But looking at her condition, I would say that might not happen anytime soon.
Hope this helps.