First of all, welcome to MFK!
Second, you have to vent the cichlid in order to find its gender
Deadeye
danotaylor
Welcome to the forum!
I don’t know Vieja too well, but with any cichlid you can’t go wrong with venting.duanes will definitely be the authority on this.
First of all, welcome to MFK!
Second, you have to vent the cichlid in order to find its gender
Deadeye
danotaylor
Beautiful fish bro, my guess would lean more towards Male. And as far as the nuchal hump it’s strictly based off of genetics. Can expect for this fish to get a kok compared to a Flowerhorn but it looks like it could get a decent nuchal hump if male.