Grunter

[boonie]

I have a grunter in my tank, its bout 20cm and it grows to about 50cm, i wanna know how can u tell the different sex, cuz i wanna breed them

 

[~THEO~]

what sort of Grunter is it?

 

[amehel0]

u do realise there is well over 30 species of gruter and nearly all are impossible to tell sex
visually?