Sent from my iPhone using Fish Lore Aquarium Fish Forum
From the pictures, I would say Male Left and Female on the right. Of course, I am not an expert on Kribensis, so please take my guess with a grain of salt.
The bottom pic (on my phone) looks female. Does she have rounded pelvic fins? It's hard to tell from the pictures. The top pic could be either, so if it's male it's pelvic fins will be longer and pointed. I think it's male but I would need to see the fins better.
I've come to the conclusion the one with less color is the male he's like half an inch bigger and has pointed fins and the female is more colorful with a big pink patch on her belly and in person you can see the round part on the end of her fin Sent from my iPhone using Fish Lore Aquarium Fish Forum