How To Sex Apistogramma Cacatuoides

[ApistoNut]

how do i sex my apistogramma cacatuoides? the male looks larger than the other 2 but they are all similar in colour, the male has a stronger colour too? how else can i tell as the pair in my 2nd tank are completely different male has red and female is just plain with no red whatso ever

 

[sswm]

With males the first few dorsal fins will be extended

 

[Sammy1911]

how do i sex my apistogramma cacatuoides? the male looks larger than the other 2 but they are all similar in colour, the male has a stronger colour too? how else can i tell as the pair in my 2nd tank are completely different male has red and female is just plain with no red whatso ever

the female tends to have a black stripe running down the pectorial fins whereas the male doesn't. The males as already mentioned have the differing dorsal fin (first 2/3 spikes are longer than the rest, the female's are all the same length)

)