Corydoras sterbai

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tmdavies

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Around 2 months ago i bought 2 corys both the same size now one is almost twice the size of the other. Is this normal any help?
 
Your Corydoras

Around 2 months ago i bought 2 corys both the same size now one is almost twice the size of the other. Is this normal any help?

Hello tm...

You could have a male and female. As tropical fish generally go, the female is much larger than the male. I believe that's the case with Corydoras.

B
 
It could also be down to the genetics of the individuals.

Just because they are the same species doesn't mean the develop at the same rates, one may be getting more of the food etc.
 
In many cory species, including sterbais, the females get quite a bit bigger than the males. Like BBradbury said, you have a couple. :)
 
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