The corydoras arrived healthy and quickly adjusted to my tank (don't be worried if they don't move around much in the shipping bag). They're difficult to count due to their energy and agility, but I received a fairly even number of males and females.

Pygmy corys are a small (only about 1 inch or 2.5 cm max) and peaceful fish, and I highly recommend them if you're looking for interesting corydoras because of their social behaviour, use of the majority of the tank (while they forage the substrate they also like to swim about everywhere and will rest on plants and hardscape), and overall cuteness. I don't tend to think of fish as cute, but with their big eyes and little whiskers pygmy corys are adorable.