The male has a ball claw and the female does not.
You can't.
eat chicken
A Boy Fiddler Crab has 1 big claw and 1 small. A Girl Fiddler Crab has 2 small claws.
Under their back legs there are dots. If there are dots its a girl if there aren't its a boy.
look at him
girl
They get visited by a stork.
Spider color
how you tell if a fiddler crab is a boy or girl is the male 1s have 1 large claw an 1 small claw an the female ones have 2 small claws
See if there is a hole or dot under there body and if it does it’s a girl
put it on it's back look at it's belly is it have's a triangle it is a boy if it has a circle it is a girl.
There are theories on how to tell, but scientists havnt took any interest in studying them, so we dont know for certain how to tell.
Wait til it decides to get out than get a magnifier and see if there r pores or open things and if it does then its a GIRL if it doesn't its a BOY