Just look between its fins, silly!
can you tell if a fish is a boy or girl by the tail
no one
you can tell by the dots or spots on the boy fish and on the girl is just a gold fish colres
Idon't no if this will help but if there is a male in the same tank as the female molly then 80% of the time the female is pregnant.
mollies are aggressive fish sometimes. i would just separate the fish . or you could try putting the same gender molly into the tank and that should help. if not then i don't know what to tell you other than get rid of it.
it doesnt go by colors.
no one
the girls get bigger and/or usually have orange on them...
Depends on the species, but determined from an opening near the fish's anus.
the boy has a ball sack
ya
Look under its skirt