If you look at there bottom fin the males have a fin that sticks strait back where females are fan shaped.
By performing an experiment
I want male lion head fish how can I sex them
if it has a slit
you can't
yes
yes
There is no one specific way to tell the difference between male and female fish. Different species have different ques, and in the vast majority of fish, there is really no reliable external way to tell a fish's sex.
Mollie and vanessa are very close. frankie and vanessa. rochelle and mollie are close to. you can tell this from all the photos.
It is poo and will drop off eventually.
It will either flee or hide. Probably it will do both.
No, they are different types of fish, but since they are both livebeares, they can interbreed.
You can tell the sex of fish by the size and shape of their fins and tails. If in doubt, just ask them.