Sexing Frontosas?

[Sonicman]

Can anyone tell me how to sex frontosas?

 

[Pure]

Mature males normally will have a hump on their heads. But this isn't always the case. Males tend to grow faster and larger than females so if you have a group the faster growing ones are most likely males. In some cases venting is the only way to tell 100%. There are two holes on each fish. The one towards the top is the anus. The one towards the bottom, closest to the anal fin, is the sex

 

[Milo]

I agree with Pure. The only way to sex a frontosa is either to wait untill they are mature (what like 2 years or something) and most of the times the males have a large hump on the forehead while the female has a smaller hump. Again if you want you can try venting for a sure hit.

 

[straitjacket]

Male or Female?