Sexing apistogramma

[pabloernesto83]

Hello everyone, I'm back again to ask for your advice on sexing these two Apistogramma. The one on the right appears to be a male, while I still have doubts about the one on the left (also in the second photo). The fish on the left sometimes stays inside the coconut shell, almost blocking the entrance with gravel and chasing everyone away, but after a few days it goes back to swimming around the aquarium as usual.

 

[MacZ]

The yellow one is a female, the oter one is a male, no doubt. Yellow with strong black markings means she's in spawning mood.
If she stays in the cave this means she's spawning.

 

[Mike Wise]

You are not likely to have breeding success if the female is continually "chasing everyone away". A community tank is not a breeding tank.

 

[pabloernesto83]

The yellow one is a female, the oter one is a male, no doubt. Yellow with strong black markings means she's in spawning mood.
If she stays in the cave this means she's spawning.

Thank you so much! However, I’ve never seen any eggs or fry… And that coloration has been stable for at least five months.