Originally Posted by HootsHooligan
I didn't even know there were differnt kinds of pygmy corys, so I am not sure what kind these were, they were just labeled as "Pygmy Cory". The gravel I have isn't HUGE its pretty average sized. Does it effect regular sized corys any less? Could a few normal sized corys be okay in the ten gallon?
Well you have about 3 different kinds of Pygmy corys. Corydoras pygmaeus, corydoras Habrosus, and another kind that I am drawing a blank on. Habrosus look and act like normal corys. They swim in the bottom and scour for food. They are a brown color with black dots down them. Pygmaeus are a little different in behavior as they like to swim in the middle and they tend to scour for food on plant leaves. They are a silverish grey with a black line down the middle. I'll have to go look up the last but you generally don't see them so it's probably not them. If it is pygmaeus then I think you will be fine with gravel as they don't necessarily spend too much time on the bottom for food.
As for the normal size, I personally think it would be fine. But generally you wanna keep 3+ corys at a time so keep that in mind. Corys can be very long lived too. My friend has had some bronze corys for at least 10 years.