I'm sure my TX is a male and the mammon is a femaleThey both could be males and he is just showing dominance.
one of my buddy advice that I should separate the parents, when I have wiggler.Observe. Let them care for the eggs. If the eggs are infertile they'll turn white and sometimes the mother will eat these eggs.
What if they eat the fry?Not necessarily. If this is their first time breeding together I'd leave them with the fries and let them care for it. Separation is only needed if one of the parents are too overly aggressive toward the other one due to lack of interest for the fries which I've never seen but heard stories about.