Dwarf Gouramis - male of female

[isaacani]

I am wondering if both my Dwarf Gouramis are males (see below)

If they are - should i give one away ?? they sometimes chase each other but i didn't see violence yet

 

[Lilmack07]

The are both males. I have two males and they don't do bad together. But a lot of people say not to put two males together. That eventually one will kill the other.