hey so i recently aquired 4 7" f1 mpimbwe frotosa and i am selling 2 of them and i wanted to keep 1 male and 1 female , how do i sex them

By venting them
...this might help also,
http://www.cichlid-forum.com/articles/frontosa_sexing.php
Usually the frontosas with nuchal humps are males. Also, males are generally bigger than the females. Another way to tell is, males are usually the ones that show aggression towards other males
This is FALSE sometimes. There are Some Big Females that Fight.
To tell if its male or female you have to vent them, Males have a small V shaped vent and Females have a O shaped vent.
Thats why I said "usually"
Well he didnt.![]()