Bad news one of the fry didn't make it. It was my fault, I didn't check the heater settings and it was too late when I realized the heater was set at 78 when the fry were accustomed to 86.
I really wanted some fry from this pair, so I decided to try them again, but the male isn't showing any signs of flirting (after being conditioned), he has built a bubble nest. I floated another male in the tank, to try to get him in the breeding mode, but he started flirting at the male! And tried to lead him back to the nest. With the female, Castiel was doing face-on flares and body thrashing, but with the male he was swimming in an S-curve and wiggling. There's another male I would like to try the female with, but she completely ignores him even when he's built a massive nest and is non-stop trying to seduce her lol. Ah so frustrating sometimes x]]