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New Member
Hey there everyone.

About a month ago I purchased two young apistogramma cacatuoides from a LFS. I was told that the larger, more colorful one was the male and the smaller one with the yellow belly was the female.

Now, I’m beginning to question if this is true. I believe I may have two males. When they are in the same proximity, they flare their gills and kind of have a stand-off between one another. The larger, more dominant one will occasionally whip his tail at the other. Then the larger one proceeds to chase the other away.

I’ve attached pictures of both apistos. The larger one is the one that has higher dorsal spines. The smaller one is darker in color. If anyone shows me how to post a video, I have one that shows the behavior I was referring to.

Any help would be greatly appreciated!


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New Member
Imo both are males but I have seen some flashy females , still not to that extent, And most likely the flaring is to size each other up ending in the smaller/weaker one turning tail and run.
Hope this helps a bit!

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