Yeah that's a Chinese Algae eater although they don't eat algae all their lives, just as juveniles. And they get very big too and become carnivorous when maturity hits.
Both girls look very eggy, were they in sight of a male?
And for Snow's lump it looks light it might be a tumor but it's hard to tell in those angles and lights. If it is a tumor, there's nothing you can do about it except make her comfortable.
Leopards: 1:4 Hawkeye, Luna, Astrael, Dorian, Cullen