male identification

[artibu]

I bougth three A. bitaeniata and I need to return one male but I'm not sure that it is a submissive male
The length is about 5 cm

This is a female and the length is about 3,5 cm

Thank you
Attilio

 

[Jonathan Aquari]

i'd say you've got a "sad" male, bring 'em back.

 

[Mike Wise]

Check the caudal fin for some kind of pattern of spots/stripes. Males, even at a young age, almost always show some kind of pattern in the caudal fin. I know of only 1 exception - a population from the Río Putumayo that is almost never collected commercially.

 

[artibu]

Thanks to everybody
I think that is very important to learn from your great esperience


Merry xmas

Attilio