its may not be easy but you can tell around spring. around spring it is mating time and the if you look right on top of the tank the male will look even on both sides and the female will look bloated on one side
The boys have very flowing fins. If you hold a mirror up against its glass so that it can see its reflection it will square up and spread and quiver it finns at its reflection.
all you have to do is click on them and it shows the sign in it
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
the boy has a ball sack
no one
put a mirror in front of the tank if the fish bloats out its gills its a boy.
Look under its skirt
Depends on the species, but determined from an opening near the fish's anus.
By the size, it's patterns/colours I BELIEVE TAHT THE GIRL TROPICAL FISH HAS EITHER A LONGER TAIL OR IS A LIGHTER COLOR THEN THE BOY TROPICAL FISH
A person can tell if a koi fish is a boy or girl by looking at their fins. A female will have fan-shaped fins with very little color.
Just look between its fins, silly!
fish boy