Is this a female Apistogramma cacatuoides? Please help!

[Csababá]

Hi,
I'm new here. Please, forgive me if I make any mistake, just tell me.

I bought a cacatuoides and in the store it looked like a female (the only one). After 2 days I'm not sure about it. On the first day my male was interested in her but now he chases it like he does it with my other true female. Actually the real female shows agression to it as well. At the moment it hides in a coconut shell.

Can you take a look at the pics and help me? Thanks a lot.
(if this post is not in the right topic, please, tell me and move it, thanks)

[Edit: Thumbnail below is clickable for larger image]

[genes]

The photos are too small to give an exact ID. But my guess would be male base on the dorsal end extension and what seem like a lyrate tail in your picture.

[Quixotic]

genes, I have fixed Csababá's links, the thumbnails are now clickable for a larger image.

[Csababá]

Thanks a lot. I'm sad to hear that since I wanted to get another female for my adult male

who is not much larger than the questioned one that you think is a sub-adult male. At first he was intereted in the newcomer and did the show dance (sorry, I don't know the term for the dance they make to impress her) and escorted it. The old female attacked it immediately with wide gills and tried to turn the male's attention to herself.

My real female had eggs with my previous male

but is not in a good relationship with the new one. I think the new male is agressive with her because she doesn't want to breed with him. Can I be right? And what can I do for them?
What do you think about this one? Is it a female?


right

[jacian]

Sorry, off topic but based on the above photo, the white stringy poo, it may be a sign of internal parasite present. Do take care of it.

[Csababá]

Jaican, I think I wrote a pm or email to you or at least I tried.

I've read about the mirror test. My fish attacked the mirror, but the attack reminds me on how my real female attacked the newcomer with open gills. How does a male react to its mirror image?

[jacian]

Csababá, I am sorry as I do not recieve any pm from you. Anyway, I am merely pointing out that there may be signs of internal parasite. I am not good in treating that and maybe other forumers may help.

As for the mirror test, we are expecting the fish to flare at his own image, not so much about attacking it.

[Csababá]

Oh, I thought it helps to sex the fish according to its bahavior with the image.
So is it for better observation.
Yes, unfortunately, it might have some illness, some of my other fish have things like that sometimes. It wasn't well kept in the store I think.

[genes]

Isn't this fish the same one as the previous picture you uploaded?

Mirror does not necessary work all the time. Both gender will flare at the mirror. Give it sometime to settle in the tank. A. cacatuoides female seems to dawn their breeding dress rather easily. Hopefully, it does for you.