Lying together, man and female ... ?
The temperature is 28°C, two more weeks with this temperature and without water exchange...

The outflow is now more under water surface.
I'm beginning to doubt if i have a couple.
The female seems to have the same characteristics of the male but less explicit.

Are these fish male and female ?

Trying to breed them, a month with lots of frozen foods and spirulina, ph: 7, then i plan a daily waterchange with cold water ph 6.2, a lot of floating plants... we'll see...
The breeding tank measures 120cm, and i read a scientific article that they like to breed ...