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Corydoras duplicareus ? And agressive behavior

Posted: 07 Mar 2024, 16:23
by kiwidu21
Good morning,
when I went to the pet store I saw that they had C. adolfoi. Already having a duplicareus, I immediately noticed that one of the 3 in the pet store was not an adolfoi but I have my doubts about the other two.
Here are the photos of the pectoral spines of the 3 specimens purchased.
The first has a fairly wide band which reminds me more of a duplicareus.

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What do you think ?

When I introduced the new ones, my old cory became aggressive. They chase the new ones quite violently and don't let them go. I have never seen such behavior before. Is there a risk of stressing newcomers too much?
https://youtu.be/b4CzPPrrNpc?feature=shared[/youtube]