I have a school of neon tetras (~ 10) and my pygmies swim with them. It's odd, but when they're together they're about the same size and I can see some unexpected similarities in their body shapes. I've got a couple of habrosus in there, too, and they'll hang around the pygmies but not the tetras.
Shy Pygmy Corydoras Catfish
in General Discussion
Posted
I have a school of neon tetras (~ 10) and my pygmies swim with them. It's odd, but when they're together they're about the same size and I can see some unexpected similarities in their body shapes. I've got a couple of habrosus in there, too, and they'll hang around the pygmies but not the tetras.